What biochemical blood test is normal table. Normal cholesterol in women

Update: December 2018

A biochemical blood test is one of the most popular methods for doctors and patients. If you learn how to “read” this analysis correctly, you can identify such serious pathologies as acute and chronic renal failure, diabetes mellitus, viral hepatitis and malignant tumors at an early stage and completely stop their development.

How to prepare before taking blood for biochemical analysis?

The nurse draws blood from the patient for a couple of minutes, this procedure does not cause any particular discomfort. Biochemical examination, like any other, requires preparation and compliance with a number of simple requirements:

  • blood must be taken strictly on an empty stomach;
  • dinner the day before should not contain strong tea and coffee, and fatty foods and alcohol should not be consumed for 2-3 days;
  • for 24 hours, you should refrain from any thermal procedures (bath, sauna) and heavy physical exertion;
  • tests are taken early in the morning, first of all, before medical procedures (droppers, injections, radiography);
  • when the patient came to the laboratory, before taking blood, it is advisable for him to sit for 10-15 minutes, catch his breath and calm down;
  • to determine the exact level of blood sugar, the patient does not need to brush his teeth, drink tea or coffee in the morning before the analysis; even if your “morning starts with coffee”, you should refrain from it;
  • also, before taking blood, it is not advisable to take hormonal drugs, antibiotics, diuretics and other drugs;
  • two weeks before the test, you need to stop drinking medications that reduce the concentration of lipids in the blood (see);
  • if it is necessary to repeat the examination, the analysis must be taken at the same time of day, in the same laboratory.

Table of biochemical blood analysis with decoding

Index Norm
total protein 63-87 g/l
Protein fractions:
  • albumins
  • globulins (α 1 , α 2 , β, γ)
  • 35-45 g/l
  • 21.2-34.9 g/l
Urea 2.5-8.3 mmol/l
Creatinine
  • women 44-97 micromoles per liter
  • men 62-124
  • In men - 0.12-0.43 mmol / l
  • In women - 0.24-0.54 mmol / l
Glucose 3.5-6.2 mmol per liter
total cholesterol 3.3-5.8 mmol/l
LDL less than 3 mmol per liter
HDL
  • women greater than or equal to 1.2 mmol per liter
  • men 1 mmol per liter
Triglycerides less than 1.7 mmol per liter
total bilirubin 8.49-20.58 µmol/l
direct bilirubin 2.2-5.1 µmol/l
Alanine aminotransferase (ALT) Up to 38 U/l
Aspartate aminotransferase (AST) Up to 42 U/l
Alkaline phosphatase (AP) Up to 260 U/l
Gamma-glutamyltransferase (GGT)
  • In men - up to 33.5 U / l
  • In women - up to 48.6 U / l
Creatine kinase (CK) Up to 180 U/l
up to 110 E per liter
Sodium 130-155 mmol/l
Potassium 3.35-5.35 mmol/l

Total protein and its fractions

Protein plays a very important role in the body, it is involved in the construction of new cells, the formation of humoral immunity and the transfer of substances. Usually proteins consist of 20 basic amino acids, although they may include vitamins, inorganic substances (metals), residues of carbohydrates and lipids.

The liquid part of the blood contains about 165 different proteins, which differ in structure and role in the body. All proteins are divided into three categories or fractions: albumins, globulins (α 1 , α 2 , β, γ) and fibrinogen. Since proteins are produced mostly in the liver, their content reflects the synthetic function of this organ.

A decrease in total protein is called hypoproteinemia (see). This condition occurs when:

  • protein starvation (vegetarianism, protein-free diet);
  • increased excretion of it in the urine (, proteinuria of pregnant women);
  • loss of blood (heavy menstruation,);
  • burns, especially with blistering;
  • accumulation of plasma in the abdominal cavity (ascites), pleural cavity (exudative pleurisy), pericardium (exudative pericarditis);
  • malignant neoplasms ( , );
  • violation of protein formation (hepatitis,);
  • long-term treatment with glucocorticosteroids;
  • reduced absorption of substances (enteritis, colitis, celiac disease, pancreatitis).

An increase in total protein is called hyperproteinemia, this condition can be relative and absolute. A relative increase in proteins occurs with the loss of the liquid part of the plasma (cholera, repeated vomiting). An absolute increase in protein occurs during inflammatory processes (due to globulins), multiple myeloma. Physical labor and a change in the position of the body changes the concentration of this substance by 10%.

The main reasons for the change in the concentrations of protein fractions

Protein fractions are: albumins, globulins and fibrinogen. Fibrinogen is not determined in the biochemical analysis. This protein reflects the process of blood clotting. It is defined in such an analysis as .

Albumins Globulins

Increasing the indicator

  • fluid loss in infectious diseases ()
  • burn disease
Α-globulins:
  • acute purulent inflammatory processes;
  • burns in the recovery phase;
  • nephrotic syndrome in glomerulonephritis.

β-globulins:

  • hyperlipoproteinemia (atherosclerosis, diabetes mellitus);
  • nephrotic syndrome;
  • an ulcer in the stomach and intestines that bleeds;

Γ-globulins:

  • viral and bacterial infections;
  • systemic connective tissue diseases (scleroderma, dermatomyositis, rheumatoid arthritis);
  • burns;
  • allergies;
  • helminthic invasion.

Level reduction

  • in newborns due to underdevelopment of liver cells;
  • during pregnancy;
  • pulmonary edema;
  • malignant neoplasms;
  • liver disease;
  • bleeding;
  • accumulation of plasma in body cavities (anasarca)

Indicators of nitrogen metabolism

In the body, in addition to building cells, their constant decay occurs, accompanied by the accumulation of nitrogenous bases. These toxic substances are formed in the liver and excreted by the kidneys. Therefore, an increase in blood slags can indicate both a decrease in the work of the kidneys and liver, and excessive breakdown of proteins. The main indicators of nitrogen metabolism include:

  • urea and creatinine
  • less often, residual nitrogen, creatine, uric acid, ammonia, indican and others are determined.

Why does the level of blood slags change?

Reasons for the increase Reasons for the decline

Urea

  • acute and chronic glomerulonephritis, pyelonephritis;
  • nephrosclerosis;
  • poisoning with mercury salts, dichloroethane, ethylene glycol;
  • crash syndrome (syndrome of prolonged squeezing);
  • arterial hypertension;
  • polycystic kidney disease;
  • kidney tuberculosis;
  • acute and chronic renal failure
  • after administration of glucose;
  • increased urine output (polyuria);
  • after hemodialysis;
  • starvation;
  • decreased metabolism;
  • hypothyroidism

Creatinine

  • acute and chronic renal failure;
  • hyperthyroidism;
  • acromegaly;
  • decompensated diabetes mellitus;
  • intestinal obstruction;
  • muscular dystrophy;
  • extensive burns

Uric acid

  • gout;
  • leukemia;
  • B-12 deficiency anemia;
  • Wakez disease;
  • acute infections;
  • liver disease;
  • severe form of diabetes;
  • skin pathologies (dermatitis, pemphigus);
  • barbiturate poisoning, carbon monoxide poisoning

blood glucose

Glucose is the main indicator of carbohydrate metabolism. This substance is the main energy product that enters the cell; it is from glucose and oxygen that the cell receives fuel for further life.

Glucose enters the blood after a meal, then enters the liver, where it is utilized in the form of glycogen. These processes are controlled by pancreatic hormones - insulin and glucagon (see).

  • The lack of glucose in the blood is called
  • Excess - hyperglycemia.

What causes fluctuations in blood glucose levels?

hypoglycemia hyperglycemia
  • prolonged fasting;
  • violation of the absorption of carbohydrates (colitis, enteritis, dumping syndrome);
  • chronic hepatic pathologies;
  • hypothyroidism;
  • hypopituitarism;
  • overdose of insulin or oral hypoglycemic drugs (diabeton, glibenclamide, etc.);
  • meningitis (tuberculous, purulent, cryptococcal);
  • encephalitis, meningoencephalitis;
  • insuloma;
  • sarcoidosis
  • DIABETES 1 and 2 types
  • thyrotoxicosis;
  • pituitary tumors;
  • neoplasms of the adrenal cortex;
  • pheochromocytoma;
  • treatment with glucocorticoids;
  • epilepsy;
  • trauma and brain tumors;
  • carbon monoxide poisoning;
  • psycho-emotional arousal

Violation of pigment metabolism

There are specific colored proteins in the human body. Usually these are peptides that contain some metal (iron, copper). These include: hemoglobin, ceruloplasmin, myoglobin, cytochrome and others. The end product of the breakdown of such proteins is bilirubin and its fractions. What happens to bilirubin in the body?

When an erythrocyte ends its existence in the spleen, its heme disintegrates. Due to biliverdin reductase, bilirubin is formed, called indirect or free. This variant of bilirubin is toxic to the whole body, and primarily to the brain. But due to the fact that it quickly binds to blood albumin, the body is not poisoned. But with hepatitis, cirrhosis of the liver, it is high, because it does not bind to glucuronic acid.

Further in the liver cells, indirect bilirubin binds to glucuronic acid (turning into bound or direct, non-toxic), its indicators are high only with dyskinesia of the biliary tract, with (see). In analyzes, direct bilirubin rises when liver cells are damaged (for example, with hepatitis).

Further, bilirubin enters the bile, which is transported from the hepatic ducts to the gallbladder, and then into the lumen of the duodenum 12. Here, urobilinogen is formed from bilirubin, which is absorbed from the small intestine into the blood and, entering the kidneys, stains the urine yellow. The rest, which reaches the large intestine, becomes stercobilin under the action of bacterial enzymes and stains the feces.

Why does jaundice occur?

There are three mechanisms:

  • increased breakdown of hemoglobin and other pigment proteins (hemolytic anemia, snake bites, pathological hyperfunction of the spleen) - indirect bilirubin is formed in such huge quantities that the liver simply does not have time to process and remove it;
  • liver diseases (hepatitis, cirrhosis, neoplasms) - the pigment is formed in a normal volume, but the liver cells affected by the disease cannot perform their function;
  • violation of the outflow of bile (cholecystitis, cholelithiasis, acute cholangitis, tumors of the head of the pancreas) - due to compression of the biliary tract, bile does not enter the intestine, but accumulates in the liver, causing the destruction of its cells and the flow of bilirubin back into the blood.

All three conditions are very dangerous for human health, they require immediate medical attention.

Indications for the study of bilirubin and its fractions:

  • hepatitis (viral, toxic);
  • liver tumors;
  • cirrhosis of the liver;
  • increased breakdown of red blood cells (hemolytic anemia);
  • appearance of jaundice.

Indicators of lipid metabolism or cholesterol levels

Lipids play an important role in cell life. They are involved in the construction of the cell wall, the formation of bile, many hormones (male and female sex hormones, corticosteroids) and vitamin D. Fatty acids are a source of energy for organs and tissues.

All fats in the human body are divided into 3 categories:

  • triglycerides or neutral fats;
  • total cholesterol and its fractions;
  • phospholipids.

Lipids are present in the blood as:

  • chylomicrons - contain mainly triglycerides;
  • high-density lipoproteins (HDL) - contain 50% protein, 30% phospholipids and 20% cholesterol;
  • low density lipoproteins (LDL) - contain 20% protein, 20% phospholipids, 10% triglycerides and 50% cholesterol;
  • very low density lipoproteins (VLDL) - are formed during the breakdown of LDL, include a large amount of cholesterol.

The greatest clinical value in the analysis has total cholesterol, LDL, HDL and triglycerides (see). When taking blood, it should be remembered that violation of the rules of preparation and the use of fatty foods can lead to significant errors in the results of the analysis.

What causes a violation of lipid metabolism and what can it lead to?

Why is it declining

total cholesterol

  • myxedema;
  • diabetes;
  • pregnancy;
  • familial combined hyperlipidemia;
  • cholelithiasis;
  • and prostate;
  • glomerulonephritis;
  • alcoholism;
  • hypertonic disease;
  • myocardial infarction;
  • cardiac ischemia
  • malignant tumors of the liver;
  • cirrhosis of the liver;
  • rheumatoid arthritis;
  • starvation;
  • malabsorption of substances;
  • chronic obstructive pulmonary disease

Triglycerides

  • viral hepatitis;
  • alcoholism;
  • alcoholic cirrhosis of the liver;
  • biliary (biliary) cirrhosis of the liver;
  • cholelithiasis;
  • acute and chronic pancreatitis;
  • chronic renal failure;
  • hypertonic disease;
  • myocardial infarction;
  • cardiac ischemia;
  • pregnancy;
  • thrombosis of cerebral vessels;
  • hypothyroidism;
  • diabetes;
  • gout;
  • Down syndrome;
  • acute intermittent porphyria
  • chronic obstructive pulmonary disease;
  • hyperfunction of the thyroid and parathyroid glands;
  • malnutrition;
  • malabsorption

The degree of increase in cholesterol in the blood:

  • 5.2-6.5 mmol / l - a slight degree of increase in the substance, a risk zone for atherosclerosis;
  • 6.5-8.0 mmol / l - a moderate increase, which is corrected by the diet;
  • over 8.0 mmol / l - a high level of a substance requiring drug intervention.

Depending on the change in lipid metabolism, 5 clinical syndromes, the so-called dyslipoproteinemias, are distinguished (1,2,3,4,5). These pathological conditions are harbingers of serious illnesses, such as diabetes mellitus and others.

Blood enzymes

Enzymes are special proteins that speed up chemical reactions in the body. The main blood enzymes include: alanine aminotransferase (ALT), aspartate aminotransferase (AST), alkaline phosphatase (AP), gamma-glutamyl transferase (GGT), creatine kinase (CK) and α-amylase.

All these substances are contained inside the cells of the liver, pancreas, muscles, heart and other organs. Their content in the blood is very small, therefore enzymes are measured in special international units: U / l. Let's consider each enzyme separately.

Alanine aminotransferase and aspartate aminotransferase

These enzymes ensure the transfer of two amino acids in chemical reactions: aspartate and alanine. AST and ALT are found in large quantities in the tissues of the liver, heart muscle, and skeletal muscles. Their increase in the blood indicates the destruction of the cells of these organs, and the higher the level of enzymes, the more cells died.

Alkaline phosphatase

This enzyme is responsible for the cleavage of phosphoric acid from chemical compounds and the transport of phosphorus within the cell. ALP has two forms: hepatic and bone. Reasons for an increase in the enzyme:

Γ-glutamyltransferase

GGT is involved in fat metabolism by transporting cholesterol and triglycerides within the cell. The largest amount of the enzyme is found in the liver, prostate, kidneys, pancreas. Its activity in the blood increases with:

  • the above liver diseases;
  • alcohol intoxication;
  • diabetes mellitus;
  • infectious mononucleosis;
  • heart failure.

Creatine kinase

CK is involved in the transformation of creatine and the maintenance of energy metabolism in the cell. It has 3 subtypes:

  • MM (enzyme located in muscle tissue)
  • MV (located in the heart muscle)
  • BB (in the brain).
  • Blood electrolytes

    Potassium and sodium are the most important electrolytes in the blood. It would seem that these are just trace elements, and their content in the body is scanty. In fact, it is difficult to imagine at least one organ or chemical process that would do without them.

    Potassium

    The trace element plays an important role in enzymatic processes and metabolism. Its main function is to conduct electrical impulses in the heart. Fluctuations in potassium levels are very bad for the myocardium.

    The state when potassium is elevated is called hyperkalemia, and when it is low - hypokalemia. What threatens the increase in potassium?

    • violation of sensitivity;
    • arrhythmias (atrial fibrillation, intracardiac blockade);
    • slowing of the pulse;
    • drop in blood pressure;

    Such threatening conditions can occur with an increase in the trace element above 7.15 mmol / l.

    A drop in potassium levels below 3.05 mmol / l also poses a threat to the body. The main symptoms of element deficiency include:

    • nausea;
    • vomit;
    • muscle weakness;
    • difficulty breathing;
    • involuntary excretion of urine and feces;
    • heart weakness.

    Sodium

    Sodium is not directly involved in metabolism. Its complete is complete in the extracellular fluid. Its main function is to maintain osmotic pressure and pH. Sodium excretion occurs in the urine and is controlled by the adrenal cortex hormone aldosterone.

    An increase in a trace element is called hypernatremia, and a decrease is called hyponatremia.

    How does sodium metabolism disorder manifest itself?

    In conclusion, I would like to give the readers of this article advice: each laboratory, whether private or public, has its own set of reagents, its own computers. Therefore, the performance standards can vary significantly. When the laboratory assistant gives you the results of the tests, be sure to make sure that the standards are written on the form. Only in this way will you be able to understand whether there are changes in your analyzes or not.


(“biochemistry” or simply BAC) is a highly informative laboratory test that allows you to judge the state and functional status of most internal organs and systems of the human body. Along with a general or general clinical analysis, this blood test is performed at the first stage of diagnosing any somatic diseases, and also serves as a reliable measure for the prevention of complications and an affordable way to detect health threats early. "Biochemistry" will tell you in time about the increased risk of developing cardiovascular pathologies, about problems with the kidneys and liver, about malfunctions of the endocrine glands, and even about the beginning of oncological processes.

As a rule, such a study is prescribed by the attending physician if there are symptoms of a serious ailment, but any person can independently contact a private medical laboratory and donate blood for “biochemistry” if he feels unwell or is simply interested in the well-being of his body. When you have a ready-made biochemical blood test in your hands, deciphering the results can cause great difficulties, so it is better to take the form to the doctor. Moreover, an objective assessment of "biochemistry" indicators is impossible without taking into account the clinical picture, anamnesis and additional diagnostic procedures.

But the curiosity of patients is understandable - I really want to know for myself what these numbers mean, and what threatens deviations from normal values. We have prepared for you all the necessary information in a concise and accessible form: the norms of a biochemical blood test for women, men and children in the table, a description of each indicator and its role in the life of the human body, as well as an explanation of the reasons why the results of "biochemistry" can be far from ideal. However, we draw your attention to the fact that the figures in different sources differ, the standards are constantly changing and laboratories may operate with other units of measurement. Therefore, we repeat once again: deciphering the results of the LHC is the task of a qualified specialist!

Indications for a biochemical blood test

The doctor necessarily directs the patient to "biochemistry" if he complains of the following symptoms:

    Persistent unexplained pain of any localization- head, dorsal, articular, muscular, in the area of ​​internal organs;

    Regular disruptions in digestion- nausea, heaviness in the abdomen, bloating, diarrhea or constipation, heartburn, belching, discomfort in the right or left hypochondrium;

    Signs of trouble with the cardiovascular system- high or, pain behind the sternum, rapid or rare heartbeat, weakness, sweating, gray skin, cold fingers and toes;

    Respiratory disorders- persistent persistent, shortness of breath, bronchospasm;

    kidney problems- change in the smell and color of urine, its delay or vice versa, frequent urge to urinate, cramps and burning in the process;

    Alarm signals from the nervous system- insomnia, chronic fatigue, mood swings, depression, and, tremor of the limbs;

    Reproductive problems in men and women - sexual dysfunction, decreased libido, menstrual irregularities, signs of inflammatory or oncological processes, inability to have children;

    Endocrine Disorders- a constant feeling of heat or cold, persistent thirst or hunger, sudden shifts in weight in one direction or another, drowsiness, irritability, dry skin, trembling, attacks of fear;

    Weak immunity, frequent and long-lasting infections;

    The presence of visible tumors on the body, pathological changes in the skin.

In general, it can be said with confidence that a doctor of any profile will need to decipher the results of a biochemical blood test in order to make an accurate diagnosis for the patient in case of ambiguous symptoms of the disease.

Be sure to donate blood for "biochemistry" expectant mothers: once in the first trimester of pregnancy, and the second time - in the last. If the indicators are not normal, the study may be carried out more often.

BAC is also done to babies immediately after birth, this is necessary to confirm or exclude some severe congenital pathologies, such as phenylketonuria or cystic fibrosis. For older children, "biochemistry" is indicated for any serious health problems, as well as for lagging behind in physical or mental development.

How to prepare for donating blood for "biochemistry"?

Such an analysis is taken from the cubital vein; five milliliters of blood is enough to study a standard set of indicators. Many factors can affect the results, so proper preparation for a visit to the laboratory is very important.

So, for the successful delivery of a biochemical blood test, the following conditions must be met:

    In two days, switch to a sparing diet - exclude fatty, sweet, spicy, salty, smoked, long-digesting dishes, and also give up alcohol;

    From the middle of the previous day, stop using tonic drinks, strong tea and coffee;

    Discuss with the doctor all the medications you are constantly taking and temporarily interrupt the course if necessary;

    On the eve, refrain from any stressful procedures and activities for the body - baths and saunas, contrast showers, sports, skydiving, heavy physical exertion;

    The last meal should take place at least 10 hours before donating blood for "biochemistry". In the morning, before going to the laboratory, you can not smoke and even brush your teeth with toothpaste. You can only drink a little plain water;

    Take a few deep breaths as you enter the treatment room and calm down if you feel nervous. This primarily applies to children, who can be very worried before any medical manipulation.

Important: if you subsequently need to conduct a biochemical analysis again or examine additional indicators, you need to donate blood in conditions as close as possible to the first time, otherwise the diagnostic data may be significantly distorted.

Table with the norms of a biochemical blood test in adults and children

Indicator and unit of measurement

Men

Women

Children

  1. 1,4-3,0
  2. 5,6-9,1
  3. 5,4-9,1
  4. 8,1-17,0
  1. 1,4-3,0
  2. 5,6-9,1
  3. 5,4-9,1
  4. 8,1-17,0
  1. 1,2-5,3
  2. 6,8-10,5
  3. 4,5-9,0
  4. 3,5-14,3

µmol/l

Lipids

mmol/l

mmol/l

mmol/l

mmol/l

mmol/l

Sahara

mmol/l

µmol/l

mmol/l

µmol/l

µmol/l

µmol/l

mmol/l

mmol/l

The total protein in the blood is lowered - the reasons:

    Absolute hypoproteinemia, that is, a deficiency of protein fractions of the blood with an adequate water balance, is observed in the case of starvation diets, gastrointestinal diseases that prevent the absorption of proteins, and cirrhosis of the liver, Wilson-Konovalov's disease, rapidly growing malignant tumors, extensive or blood loss, hyperthyroidism, prolonged fever, nephrotic syndrome, glomerulonephritis, pleurisy, as well as taking corticosteroid hormones and heavy physical exertion;

    Relativehypoproteinemia due to an increase in the water content in the bloodstream. This happens with anuria (urinary retention), edema, intravenous infusions of glucose, hyperproduction of the antidiuretic hormone vasopressin.

Norm:

    Women and men - 33-55 g / l

    Children - 32-46 g / l

Albumin is considered the main protein among all blood plasma proteins, and not only because it is the most numerous (up to 65% of all fractions). This protein ensures the constancy of circulating blood volumes, regulates oncotic pressure, carries carbohydrates and hormones, and binds substances potentially dangerous to the body, such as bilirubin.

Important: a condition in which the concentration of albumin in the blood is abnormally high is called hyperalbuminemia, and the reverse situation is called hypoalbuminemia. At the same time, an increased content of albumin for blood plasma is not typical, but if it occurs, it is accompanied by relative hyperalbuminuria (high levels of albumin in the urine).

Albumin in the blood is elevated - causes:

    Dehydration of the body;

    Transfusion of donor protein (20% albumin solution).

Albumin in the blood is lowered - causes:

    starvation diets;

    Pathologies of the digestive system that interfere with the normal absorption of proteins from food, including malignant tumors and disorders of the structure of the gastrointestinal tract;

    Acute and chronic bacterial infections;

    congestive heart failure;

    Cirrhosis of the liver and other lesions of the hepatic parenchyma;

    Extensive burns, crushed injuries, massive blood loss;

    Ulcerative colitis;

    Peritonitis;

    Volvulus;

    Acute and chronic glomerulonephritis;

    nephrotic syndrome.

Norm:

    Alpha-1: women and men - 1.4-3.0 g / l, children - 1.2-5.3 g / l

    Alpha-2: women and men - 5.6-9.1 g / l, children - 6.8-10.5 g / l

    Beta: women and men - 5.4-9.1 g / l, children - 4.5-9.0 g / l

    Gamma: women and men - 8.1-17.0 g / l, children - 3.5-14.3 g / l

Globulin proteins are divided into four fractions: alpha-1, alpha-1, beta and gamma. As part of the interpretation of the results of a biochemical blood test, it is necessary to take into account the deviations of each of the listed indicators from the norm separately, as well as the combination of these deviations with each other.

Important: when a person has too high a level of globulins in the blood, this is hyperglobulinemia, and when it is too low, it is hypoglobulinemia. However, the violation of the concentration of all four fractions of this protein has its own diagnostic value.

These substances are produced by liver cells and belong to the so-called "acute phase proteins". This means that their content in the blood increases dramatically in the event of an inflammatory process, a violent allergic reaction, traumatic tissue damage, and emotional stress. Moreover, the more serious the problem, the more this indicator deviates from the norm upwards. And such a picture is observed almost immediately from the onset of the disease.

Alpha globulins in the blood are elevated - causes:

    Damage to the body by infection (pneumonia, tuberculosis, polyarthritis, sepsis);

    Injuries, burns, surgical interventions;

    rheumatic fever;

    malignant tumors;

    Nephrotic syndrome (while the remaining globulin fractions will be lowered);

    Reception of androgenic hormones.

Alpha globulins in the blood are lowered - the reasons:

    General protein deficiency due to starvation or exhausting physical exertion;

    respiratory failure;

    intravascular hemolysis.

This fraction of proteins is involved in the transfer of iron and the prevention of its loss through urination, is involved in cholesterol metabolism and immune response reactions. Therefore, when deciphering the results of a biochemical blood test, the doctor necessarily pays attention to any deviations from the norms of the content of beta globulins, because this may indicate anemia, an increased risk of developing atherosclerosis, liver damage, or even an oncological process.

Beta globulins in the blood are elevated - causes:

    Malignant tumors and blood diseases;

    infectious hepatitis;

    Mechanical jaundice;

    Iron-deficiency anemia;

    taking corticosteroids;

    Pregnancy.

Beta globulins in the blood are lowered - the reasons:

    Acute and chronic infections;

    neoplastic processes;

    Starvation diets, exhausting physical labor;

    Diseases of the gastrointestinal tract with impaired absorption of proteins.

This fraction of proteins is congenital and acquired immunoglobulins - antibodies that provide a person with stable humoral immunity. Therefore, a jump in their blood levels directly indicates a recent external threat to health. A constantly elevated concentration of gamma globulins accompanies most inflammatory, degenerative-dystrophic and autoimmune processes in the body.

Gamma globulins in the blood are elevated - causes:

    Infectious lesions of internal organs (hepatitis, bronchitis, gastritis);

    Cirrhosis of the liver, toxic effects on the body;

Gamma globulins in the blood are lowered - the reasons:

    Long-term therapy with cytostatics or glucocorticoids;

    Splenectomy;

    Malignant lesions of the lymphatic system (Hodgkin's lymphoma, lymphosarcoma);

    nephrotic syndrome;

    Exhaustion, malnutrition;

    The period after plasmapheresis;

    Pregnancy (sometimes);

    Terminal stage of AIDS.

Norm:

    Women and men - 2.0-4.0 g / l

    Children - 1.2-3.8 g / l

Fibrinogen is a protein that is a blood coagulation factor and determines its viscosity. In addition, it acts as a building material in the process of tightening and healing wounds. Fibrinogen also belongs to acute-phase proteins, respectively, an increase in its level in the blood indicates the start of the inflammatory process. But since the main role of this protein is to ensure coagulation hemostasis, the excess is dangerous, first of all, the risk of blood clots in the vessels.

The concentration of fibrinogen in the blood of newborn babies is slightly lower than in adults, and usually does not exceed 3 g / l. But in pregnant women, as they approach childbirth, the level of this protein can rise to 6 g / l, and this is completely normal. Only significant deviations from the recommended indicators should cause alarm in those people who do not have natural physiological prerequisites for a deficiency or surplus of fibrinogen in the blood.

Important: the state when a person's fibrinogen level is above normal is called "hyperfibrinogenemia", and when it is lower - "hypofibrinogenemia".

Fibrinogen in the blood is elevated - causes:

    Inflammatory diseases of the lungs (tuberculosis,);

    Kidney pathologies (pyelonephritis, nephrotic syndrome, glomerulonephritis);

    Liver diseases (cirrhosis, hepatitis);

    Infectious lesions of the digestive tract (gastritis, enterocolitis, peritonitis);

    prostate cancer;

    Metastases of malignant tumors in the bone marrow;

    Deficiency of vitamins C and B12.

Norm:

    Women - 12-76 mcg / g

    Men - 19-92 mcg / l

    Children - 10-68 mcg / l

Myoglobin is often called "muscle hemoglobin", and indeed, these proteins are very similar in structure - both carry ferrous iron, only the protein part of the molecules differs. But their functions are different: if hemoglobin runs along the bloodstream aboard red blood cells and carries oxygen to the organs, taking carbon dioxide back from them, then myoglobin sits in the muscles and stores oxygen to ensure internal tissue respiration. So, if damage occurs to myocytes - skeletal muscle cells, or cardiomyocytes - cells of the most important muscle of the human body, that is, the heart, then myoglobin will be thrown into the bloodstream in large quantities. From this it is clear that deciphering the results of a biochemical blood test for this indicator plays a crucial role in diagnosis.

Important: the condition when a person has an abnormally high concentration of myoglobin in the blood is called hypermyoglobinemia, and when it is not enough - hypomyoglobinemia.

Myoglobin in the blood is elevated - causes:

    Any inflammatory processes in the muscles;

    myocardial infarction;

    uremic syndrome;

    Burns, injuries, postoperative period.

Myoglobin in the blood is lowered - causes:

    polymyositis;

    Rheumatoid arthritis;

Norm:

    Women - 1.85-4.05 g / l

    Men - 2.0-3.8 g / l

    Children - 2.0-4.0 g / l

Transferrin or siderophilin is a protein whose main task is to transport iron throughout the body to those places where there is a need for this element. Transferrin is produced by the liver and brain. In addition to the named function, this protein picks up ferric ions that have arisen after the decay of old erythrocytes and binds them, because they are toxic in a free state.

Transferrin "lives" mainly in the mucous membranes, where it constantly searches for and binds iron, including so that the pathogens of infectious diseases that get there are deprived of oxygen and cannot multiply. Transferrin belongs to the fraction of beta globulins and is involved in maintaining innate humoral immunity, therefore, deviations of this indicator from the norm when deciphering the results of a biochemical blood test are of great diagnostic value, especially when it comes to deficiency.

Important: if the patient's transferrin level in the blood is too high, they speak of hypertransferrinemia, and in the opposite situation - hypotransferrinemia.

Transferrin in the blood is elevated - causes:

    Pregnancy;

    Heavy bleeding (menstrual, nasal, rectal);

    Iron-deficiency anemia;

    The use of oral contraceptives containing estrogens.

Transferrin in the blood is lowered - causes:

    Malignant neoplasms;

    Any chronic inflammatory processes;

    Hepatitis, cirrhosis of the liver;

    nephrotic syndrome;

    Chemical and thermal burns;

    hyperchromic anemia;

    Thalassemia;

    Hemochromatosis;

    multiple myeloma;

    Reception of androgens and corticosteroids;

    Massive infusion of donated blood.

Norm:

    Women - 22-180 mcg / l

    Men - 30-310 mcg / l

    Children - 7-140 mcg / l

Ferritin is a protein in the form of which the human body stores iron for future use. This protein is found in almost all organs and tissues, but it is especially abundant in the liver, gastrointestinal tract and inside the largest immune cells with phagocytic activity - monocytes. Ferritin works in conjunction with transferrin, a protein that binds iron. Together, these indicators, when deciphering the results of the “biochemistry” of blood, indicate the level of supply of the body with ferrum, which means they describe the risk of developing anemia.

Women have a lower concentration of ferritin in plasma, and this is the norm, since the fair sex naturally has fewer red blood cells and hemoglobin. During pregnancy, the content of ferritin in the body of the expectant mother falls even lower, because part of the iron reserves goes to the needs of the child. By the third trimester, the level of this protein is approximately 10-15 μg / l. But in newborn babies in the first days of life, ferritin levels are very high - up to 600 μg / l, because their hematopoietic system only “accelerates” and seeks to provide the body with fresh red blood cells as quickly as possible.

Important: if the concentration of ferritin in the blood is abnormally high, we are talking about hyperferritinemia, and if, on the contrary, it is too low, it is about hypoferritinemia.

Ferritin in the blood is elevated - causes:

    Massive and repeated infusions of donor blood;

    Uncontrolled intake of iron preparations;

    Liver pathologies (cirrhosis, fatty hepatosis, viral hepatitis, toxic or alcoholic damage, obstructive jaundice, necrosis, cancer, metastases from other organs);

    Blood diseases - thalassemia, leukemia;

    malignant tumors;

    collagenoses;

    Any acute inflammatory processes and feverish conditions;

    Burns, injuries.

Ferritin in the blood is lowered - causes:

    iron deficiency;

    Malabsorption syndrome;

    nephrotic syndrome;

    Pregnancy.

TIBC (total iron-binding capacity of serum)

Norm:

    Women - 40.8-76.7 µmol / l

    Men - 40.6-62.5 µmol / l

    Children - 40.2-71.0 µmol / l

OZHSS is an indicator that, as part of deciphering the results of a biochemical blood test, indicates how much iron can theoretically “stick” to the transferrin protein and go on board to the bone marrow to produce new red blood cells. In addition, the iron-binding function of serum is needed to ensure the return path - from the sites of destruction of old blood cells by macrophages to the storage of iron reserves in the form of ferritin protein. OGSS may otherwise be referred to as "total transferrin".

OZHSS increased - reasons:

    Pregnancy;

    Blood loss (heavy menstruation,);

    Hypochromic anemia;

    Thalassemia;

    Hepatitis, cirrhosis of the liver;

    iron deficiency;

    Taking oral contraceptives.

OZhSS lowered - reasons:

    Some types of anemia (sickle cell, hemolytic, pernicious);

    Hemochromatosis and hemosiderosis;

    Nephrosis, degeneration of the renal tubules;

    Exhaustion of the body, protein deficiency;

    Chronic infectious processes;

    Iron poisoning due to its excess in the diet or intake in the form of drugs;

    Malignant tumors (sometimes).

C-reactive protein (CRP)

Norm:

    Women, men and children - up to 5 mg / l

This is a rather old, but informative laboratory test, which can be used to judge the presence or absence of an acute inflammatory process in the patient's body. In this regard, C-reactive protein is comparable to the ESR (erythrocyte sedimentation rate). However, CRP describes the course of the disease much more accurately and better, because this acute-phase protein increases its concentration in blood plasma by more than 100 times within a few hours from the manifestation of inflammation and returns to normal a week after recovery. While ESR and leukocytes behave abnormally for a long time, and they do not immediately react to the onset of the disease.

In a healthy person, C-reactive protein in the blood is present in minimal amounts or is not detected at all, so we will only discuss possible explanations for high rates in the framework of deciphering the results of “biochemistry”.

C-reactive protein in the blood is elevated - causes:

    myocardial infarction;

    Bacterial and viral infections;

    Acute and chronic inflammatory processes in the internal organs;

    Injuries, burns, postoperative period;

    Oncological diseases of the hematopoietic and lymphatic systems;

    Autoimmune pathologies.

Norm:

    Women, men and children - up to 14 IU / ml

Rheumatoid factor (RF) is a group of antibodies, 90% of which belong to class M immunoglobulins, and 10% to classes A, E and G. As the name implies, rheumatoid factor is needed to diagnose the corresponding disease, but not only this the indicator in the blood can be increased in some other inflammatory and autoimmune pathologies.

Against the background of the most common form of rheumatoid arthritis, that is, synovitis, the level of RF increases in 80% of patients. For healthy people and children of any gender, the norms are the same - up to 14 IU / ml. But keep in mind that in old age (after 65-70 years) the values ​​of the rheumatoid factor may increase slightly, and this will not necessarily indicate a disease.

Rheumatoid factor increased - causes:

    Autoimmune pathologies (rheumatoid arthritis, Sjögren's syndrome,);

    Acute and chronic inflammatory diseases of various etiologies (flu, tuberculosis, sarcoidosis, mononucleosis, syphilis, hepatitis);

    Taking certain drugs (methyldopa, contraceptives);

    hyperglobulinemia;

    Oncological diseases of the blood, malignant tumors;

    postoperative period.

Antistreptolysin-O (ASLO)

Norm:

    Women and men - up to 200 U / l

    Children - up to 150 U / l

Antistreptolysin-O (ASLO, ASO) are antibodies that the human body produces in response to the toxic effect of the poison of the same name. Streptolysin is secreted by group A beta hemolytic streptococcus (BSHA, pyogenic streptococcus) during its life. This infectious agent is very dangerous, especially for children, since the diseases provoked by it often lead to the development of severe complications, for example, rheumatic heart disease. But for adults who have had a sore throat, which is often caused by pyogenic streptococcus, it will not hurt to take a biochemical blood test to find out whether this insidious microorganism led to the disease, and if so, how much "destruction" he did.

Antistreptolysin-O (ASLO) in the blood is elevated - causes:

Any inflammatory diseases caused by group A beta-hemolytic streptococcus, for example, angina, otitis media, pneumonia, myositis, erysipelas, scarlet fever, meningitis, osteomyelitis, glomerulonephritis, endocarditis, rheumatism, sepsis, toxic shock syndrome.

Norm:

    Women - 11-43 ng / ml

    Men - 14-43 ng / ml

    40-250 ng/ml

Osteocalcin is a protein produced by young bone cells called osteoblasts. This protein is contained mainly in the intercellular space, and its synthesis directly depends on the presence in the body of a sufficient amount of calcium, vitamins D and K. In addition, the production of osteocalcin is influenced by the hormones of the thyroid and parathyroid glands - calcitonin and parathyrin.

In children, the level of osteocalcin in the blood is significantly higher than in adults, especially in the first years of life and during puberty. This is explained very simply - the child grows, his skeleton changes, the bones stretch, thicken and get stronger. But if the concentration of osteocalcin in the blood plasma is abnormally high in a person in adulthood, this does not mean anything good, as, indeed, if it is too low.

Deciphering the results of biochemical analysis for this indicator plays a crucial role in the diagnosis of bone disease, osteoporosis, which is common among older women.

Important: a condition in which a person has a very high level of osteocalcin in the blood is called “hyperosteocalcinemia”, and the opposite situation is “hypoosteocalcinemia”.

Osteocalcin in the blood is elevated - causes:

    multiple myeloma;

    Primary biliary cirrhosis of the liver.

Fats (lipids)

Cardiovascular pathologies are the leading cause of death in all developed countries of the world. And the occurrence of these diseases, first of all, is caused by disorders of fat metabolism, due to which cholesterol plaques form on the inner walls of blood vessels. To assess the risk of developing atherosclerosis, heart attack and stroke in a particular patient, a lipid profile is performed as part of a biochemical blood test, or, in other words, a “lipid profile” of a person is compiled.

Among the indicators of interest to the doctor is not only the total cholesterol level, but also the content of each of its fractions in the blood plasma, that is, high, low and very low density lipoproteins. In addition, it is necessary to assess the degree of triglyceride concentration and calculate the atherogenic coefficient, based on the results obtained. Only then can one accurately judge whether a person is threatened with problems with the heart and blood vessels in the near future.

Norm:

    Women - 3.0-6.2 mmol / l

    Men - 3.0-6.9 mmol / l

    Children - 2.2-5.2 mmol / l

Cholesterol is a polycyclic lipophilic alcohol that is part of bile, participates in the formation of cell membranes, acts as a precursor of some hormones and performs many more functions, so it is wrong to consider it harmful. In addition, there are several types of cholesterol, unequal in properties. For human health, not only the normal level of cholesterol in the blood is important, but also the correct ratio between its fractions. It is produced in the liver, and also enters the body with food, while the excess is excreted through the intestines.

Important: a condition in which a person has too high a concentration of cholesterol in the blood plasma is called hypercholesterolemia, hyperlipidemia, hyperlipoproteinemia or dyslipidemia, and the reverse situation is called hypocholesterolemia.

Increased total cholesterol in the blood - causes:

    Diabetes;

    Obesity;

    Stagnant processes in the gallbladder;

    kidney failure;

    Some oncological diseases;

    Thyroid dysfunction;

    genetic feature;

    Alcoholism.

Total cholesterol in the blood is lowered - causes:

    Lipid-poor diet, malnutrition;

    Liver failure;

    Frequent stress;

    Diseases of the gastrointestinal tract that interfere with the absorption of fats;

    Hyperthyroidism;

    congenital anomaly.

Norm:

    Women - 1.5-4.5 mmol / l

    Men - 1.6-4.9 mmol / l

    Children - 1.5-3.5 mmol / l

Low-density lipoprotein is the type of cholesterol that is rightfully considered unhealthy. And this is sad, because LDL accounts for up to 70% of all representatives of this class of substances. “Bad” cholesterol is formed from “very bad”, that is, from VLDL, under the influence of the enzyme lipoprotein lipase.

LDL perform a transport function - they carry triglycerides on themselves. If more fat is supplied to the body with food than energy is spent, fat deposits form under the skin and around internal organs, obesity develops, and LDL "have a hand" in this process, delivering excess lipids through the bloodstream to fat "depots".

But this is not the worst - low-density lipoproteins are called so because they are liquid, and even sticky. Traveling through the vessels, LDL attaches to their inner surface in those places where there are irregularities and microdamages, gradually accumulate, form atherosclerotic plaques and clog the lumen.

LDL levels in the blood are elevated - causes:

    Irrational nutrition with an excess of unhealthy fats in the diet;

    Sedentary lifestyle;

    Endocrine disorders (diabetes mellitus, hypothyroidism);

    Hypertonic disease;

    cholelithiasis;

    kidney failure;

    Smoking and alcohol abuse;

    hereditary factor.

Low LDL in the blood - causes:

    Acute infectious diseases;

    Liver failure;

    Hyperthyroidism;

    Pregnancy;

Norm:

    Women - 0.13-0.63 mmol / l

    Men - 0.15-0.68 mmol / l

    Children - 0.1-0.5 mmol / l

Very low density lipoproteins are synthesized by the liver from excess fats and carbohydrates ingested with food. VLDL consist mainly of triglycerides, and there is little cholesterol in them, so they can bind it and in this way turn simply into LDL. The molecules of these lipoproteins are the largest in size among all their counterparts.

A significant increase in the level of "very bad" cholesterol in the blood will be obvious to the laboratory assistant even without deciphering the results of biochemical analysis. Because the blood at the same time becomes cloudy and acquires a milky hue. This happens in people with severe forms of diabetes, obesity and kidney failure.

Norm:

    Women - 0.8-2.1 mmol / l

    Men - 0.7-1.6 mmol / l

    Children - 0.9-1.9 mmol / l

High-density lipoproteins are also known as "good" cholesterol. They contain a lot of phospholipids that keep "bad" cholesterol in suspension and prevent it from leaving the bloodstream. HDL transport excess fat to the liver for disposal, while they have a dense structure and along the way they clean off atherosclerotic plaques formed by a harmful counterpart from the inner surface of the vessels. Therefore, a lack of “good” cholesterol is just as dangerous to health as an excess of “bad” cholesterol.

HDL in the blood is elevated - causes:

    Excess fatty fish, vegetable oils in the diet;

    Biliary cirrhosis and fatty degeneration of the liver;

HDL in the blood is lowered - the reasons:

    Insufficient intake of foods containing beneficial fatty acids;

    A rare hereditary pathology is Tangier's disease, in which there is little HDL in the blood, and a lot in organs and tissues.

Norm:

    Women - 0.40-2.20 mmol / l

    Men - 0.45-3.70 mmol / l

    Children - 0.34-1.48 mmol / l

Triglycerides are metabolites into which the body converts all excess fats and carbohydrates from food. It is in the form of triglycerides that our body stores reserves in order to break them down if necessary and use the energy received for current needs. However, practice shows that in the modern world, hunger rarely happens, but many people have the habit of overeating and a love for tasty, fatty foods. It makes no sense to consider the reasons for the low levels of triglycerides when deciphering the results of a biochemical analysis, because in a healthy person these substances should be detected in the blood plasma in minimal quantities.

Triglycerides are elevated - causes:

    Abuse of fatty and carbohydrate foods, regular overeating;

    Obesity;

    Diabetes;

    Hypertension, ischemia, atherosclerosis;

    gallstone disease, hepatitis;

    Renal failure, nephrotic syndrome;

    Myxedema;

    pancreatitis;

    Alcoholism;

    Long-term use of corticosteroid hormones, diuretics, beta-blockers.

Norm:

    Women - 1.7-2.8

    Men - 2.0-3.0

    Children - 1.5-2.5

This indicator closes the lipidogram in the form of the results of a biochemical blood test and allows you to make a final conclusion about the degree of risk of developing atherosclerosis and other serious cardiovascular pathologies in a particular patient.

Important: the coefficient of atherogenicity is calculated by the formula: (LDL + VLDL) / HDL

The value obtained in children should not exceed 2.5, in young people - 3, in the elderly - 3.5. If the coefficient goes off scale for 4, it's time to sound the alarm: review the diet, lose weight, treat chronic diseases that further exacerbate this problem. With an indicator of more than 5, a person probably already has atherosclerosis.

Sugar (carbs)

According to the World Health Organization, over the past 100 years, the consumption of sugar and easily digestible carbohydrates in developed countries has increased 20 times. Affordable food, for the most part, has an unnatural composition. The food industry has acquired dozens of new chemical additives that give a pleasant taste and appetizing look to cheap products and extend their shelf life. Fast food has become widespread, millions of people have already become addicted to hamburgers, french fries and sweet soda. All this could not but lead to an increase in cases of endocrine disorders in adults and children, primarily diabetes.

Norm:

    Women and men - 3.3-5.5 mmol / l

    Children - 2.5-5.5 mmol / l

Glucose or hexose is the main monosaccharide that gives energy to the brain and other vital organs and tissues. The so-called white sugar is found in any sweets and confectionery, as well as in most prepared and canned foods. When we eat them, glucose begins to break down in the mouth, and then this process continues in the intestines under the guidance of the hormone insulin secreted by the pancreas.

Satisfying hunger with “simple” carbohydrates is not difficult, because energy will almost immediately enter the bloodstream. But then the glucose concentration will decrease as quickly as it rose, and the person will want to eat again. If he regularly succumbs to such temptation, the pancreas will cease to cope with the load and diabetes will develop. However, an abnormal glucose level when deciphering the results of a biochemical blood test can indicate a number of other pathologies.

Increased blood glucose - causes:

    Excess consumption of sweets;

    Diabetes;

    Inflammatory and oncological diseases of the pancreas;

    Traumatic brain injuries and brain tumors;

    Hyperfunction of the thyroid gland and adrenal cortex;

    Liver failure;

    burn disease;

    Severe stress, unusually intense physical activity;

    Taking certain drugs (psychotropic, sleeping pills);

    Condition after hemodialysis.


Low blood glucose - causes:

    Malnutrition, starvation diets;

    Hyperactivity of the pancreas, a specific tumor - insulinoma;

    Incorrect calculation of insulin dosage in diabetics;

    Diseases of the digestive tract and liver, leading to impaired absorption of sugars;

    Congenital intolerance to fructose, lactose, gluten;

    Pregnancy.


Norm:

    Women and men - 205-285 µmol / l

    Children - 195-271 µmol / l

When glucose enters the blood, it binds to blood proteins, which is called the glycation reaction. As a result of the combination of glucose with albumin, the glycated protein fructosamine is obtained. Its peculiarity is that it does not leave the bloodstream for quite a long time - up to twenty days, such is the duration of its life. Therefore, when deciphering the results of a biochemical analysis, this indicator will characterize the average concentration of glucose in the blood for 2-3 weeks.

For people with diabetes, it is very important to constantly maintain normal sugar levels, and the fructosamine test is a very convenient and effective method of monitoring. If the data does not suit the doctor, it will be possible to make adjustments to the treatment regimen or change the dosage of insulin. Such an analysis is often prescribed for pregnant women suffering from diabetes, and newborn babies with suspected pathology of carbohydrate metabolism.

Fructosamine in the blood is increased - causes:

    Diabetes;

    Hypothyroidism;

    Syndrome Itsenko-Cushing;

    Trauma and tumors of the brain.

Fructosamine in the blood is lowered - the reasons:

    diabetic nephropathy;

    nephrotic syndrome;

    Taking large doses of vitamin C.

Norm:

    Women, men and children - 1.2-1.6 mmol / l

Seromucoids or seroglycoids are complex proteins containing several groups of carbohydrates in the form of monosaccharide residues. A favorite habitat for these serum glycoproteins is connective tissue. If cells are damaged or destroyed due to any cause (trauma, inflammation, autoimmune or malignant process), seromucoids are released and released into the blood. This means that if this indicator in the decoding of a biochemical blood test is above the norm, then there is some kind of pathology affecting the connective tissues.

Seromucoids are elevated - causes:

    Oncological diseases;

    Chronic inflammatory processes (tuberculosis, pancreatitis, glomerulonephritis);

    Autoimmune pathologies (scleroderma, rheumatoid arthritis);

    Thyroid dysfunction;

    Myocardial or cerebral infarction;

    Cholelithiasis;

Seromucoids are lowered - causes:

    Hepatitis, cirrhosis, fatty degeneration, liver cancer;

    Wilson-Konovalov syndrome.

In this group of substances, the most important for the study are the so-called "liver tests" (AlAT and AsAT), as well as amylase, which characterizes the functional status of the pancreas. But there are other enzymes that can be used to judge the state of internal organs, in particular, the heart. When you have a ready-made biochemical blood test on hand, deciphering the results by enzyme indicators is usually not difficult, since the norms for adults and children differ slightly, and the tolerance limits are quite narrow, because the production of enzymes in people of any age and gender is approximately the same. There are few exceptions to this rule, we will also discuss them.

Alanine aminotransferase (ALT, ALT)

Norm:

    Women - up to 35 U / l

    Men - up to 41 U / l

    Children - up to 30 U / l

The composition of "liver tests" includes the enzymes ALT and AST, for convenience, simply referred to as alates and asats. Moreover, if it is necessary to assess the health of the liver, then these indicators are always examined together, and if there is a suspicion of heart problems, then they are usually limited to checking the ASAT for compliance with the standards.

Alanine aminotransferase is mainly concentrated in the liver, but it is also abundant in other organs with parenchyma (a set of cells with specific functions). In the case of the liver, these are hepatocytes, with the pancreas, acinocytes, and so on. AlAT is located in the cytoplasm of these cells, and if the level of its concentration significantly exceeds the norm, then the organ is covered by an inflammatory, autoimmune, neoplastic or degenerative-dystrophic process. Moreover, as a rule, we are talking about a disease that has just begun (trauma, toxic damage) or an exacerbation of an already existing pathology. The rest of the time, alanine aminotransferase behaves calmly.

ALT (AlAT) in the blood is increased - causes:

    Any form of hepatitis;

    Damage to the hepatic parenchyma by alcohol, pesticides and other poisons;

    Infectious mononucleosis;

    Acute rheumatic heart disease;

    The period after heart surgery, catheterization of cardiac vessels;

    Infectious mononucleosis;

    Hepatitis, cirrhosis of the liver;

    Cholangitis;

    Toxic damage to the hepatic parenchyma (alcohol, poisonous mushrooms);

    Acute pancreatitis;

    hemolytic syndrome;

AST (AST) in the blood is lowered - the reasons:

    Rupture or necrosis of the liver;

    Vitamin B6 deficiency.

Norm:

    Women, men and children - up to 120 U / l

This enzyme breaks down complex carbohydrates from food into simple sugars so that they can be absorbed into the blood and provide organs and tissues with the necessary energy. Part of alpha-amylase is produced by the salivary glands, but the main supplier of this digestive enzyme or enzyme is the pancreas. Pancreatic amylase is more powerful than salivary amylase and can process even raw starch.

Normally, at night, the level of alpha-amylase in the blood plasma falls according to biorhythms, this is another reason why you should not run to the refrigerator at a later time - you can earn yourself pancreatitis. In general, deciphering the results of the "biochemistry" of blood according to this indicator is necessary for the diagnosis of any diseases of the pancreas, and not only.

Alpha-amylase in the blood is increased - causes:

    Exacerbation of chronic pancreatitis;

    Perforation of a peptic ulcer in the pancreas;

    mumps (mumps);

    Intestinal obstruction;

    Peritonitis;

    diabetic acidosis;

    kidney failure;

    Poisoning with methyl alcohol and other poisons;

    Taking certain drugs (diuretics, antibiotics, synthetic hormones, narcotic analgesics).

Alpha-amylase in the blood is lowered - causes:

    Pancreatic necrosis;

    Thyrotoxicosis;

    myocardial infarction;

    Hepatitis, liver cancer;

    polymyositis;

    Hypermetabolism of skeletal muscles;

    Crash syndrome (prolonged tissue compression);

    Acute rheumatic heart disease;

    Heart failure;

    Hypoxia, hyperthermia, shock;

    Spasm of skeletal muscles;

    Poisoning by alcohol and poisons;

    Raynaud's syndrome;

    Epilepsy;

    Affective insanity;

    Schizophrenia;

    Hypothyroidism;

    Oncological diseases;

    Radiation sickness;

    Bedsores in bedridden patients;

    Significant power physical activity;

    Intramuscular injections of certain drugs (analgesics, antibiotics, psychotropic, sedative and narcotic drugs).

Creatine kinase in the blood is lowered - causes:

    Hyperthyroidism;

    Lack of muscle mass;

    Sedentary lifestyle.

Lactate dehydrogenase (LDH)

Norm:

    Women - 120-214 U / l

    Men - 135-240 U / l

    Children - 100-290 U / l

Lactate dehydrogenase is a glycolytic intracellular enzyme that accelerates the conversion of lactic acid (lactate) into pyruvates, that is, salts of pyruvic acid. Most LDH is found in humans in the heart, liver, kidneys, and red blood cells. There are five isoenzymes of lactate dehydrogenase: LDH-1 increases with myocardial infarction, LDH-2, 3 and 4 actively increase their concentration with the death of red blood cells, and the level of LDH-5 increases with hepatitis. But deviations from the norm of the content of any type of lactate dehydrogenase in the blood when deciphering the results of a biochemical analysis should alert the attending physician, because this can indicate a number of serious pathologies.

LDH in the blood is increased - causes:

    Acute myocardial or pulmonary infarction;

    Heart and lung failure;

    Pernicious and hemolytic anemia;

    Any inflammatory processes in the lungs, heart, kidneys, liver, pancreas;

    Pulmonary embolism;

    The debut of viral hepatitis;

    Malignant tumors with metastases;

    Blood diseases (thalassemia, granulocytosis, leukemia);

    Deficiency of vitamins B9 and B12;

    Massive destruction of platelets;

    Injuries and dystrophic lesions of skeletal muscles.

    Alcoholic delirium;

    Hypothyroidism;

    burn disease;

    Eclampsia.

LDH in the blood is lowered - the reasons:

    hereditary gene mutation;

    Accelerated breakdown of glucose in people with high physical activity, professional athletes.

Gamma-glutamyl transpeptidase (GGT, GGTP)

Norm:

    Women - up to 32 U / l

    Men - up to 49 U / l

    Children - up to 23 U / l

GGT is a membrane-binding enzyme that takes part in the construction of new protein molecules and is an important participant in many biochemical reactions in the body. Gamma-glutamyl transpeptidase is located mainly in the tissues of the liver, kidneys, pancreas, spleen and gallbladder. As part of the interpretation of the results of a biochemical blood test, the so-called “liver tests” are separately considered, which, along with AlAT, AsAT, alkaline phosphatase and bilirubin, include GGT. But this figure may be higher than normal and with problems in the work of other organs.

GGT in the blood is increased - causes:

    GSD, cholestasis and obstructive jaundice;

    Viral hepatitis;

    Compensated cirrhosis and fatty degeneration of the liver;

    Toxic or radiation damage to the hepatic parenchyma;

    Liver cancer and metastases from other organs;

    Glomerulonephritis;

    myocardial infarction;

    chronic alcoholism;

    Taking certain drugs (antiepileptic, hormonal, diuretic, anti-tuberculosis, antirheumatic, contraceptive, cytostatic).

GGT in the blood is lowered - the reasons:

    Decompensated cirrhosis;

    Liver necrosis.

Norm:

    Women and men - up to 190 U / l

    Children - up to 130 U / l

Lipase is a digestive enzyme that is designed specifically to break down fats that have entered the body with food. Bile acids and the coenzyme lipase (colipase) are also necessary for the successful process. When deciphering the results of "biochemistry" of blood in adults and children, the level of lipase is paid attention, first of all, in connection with the diagnosis of diseases of the pancreas, since the enzyme is synthesized by this particular organ. But deviations of this indicator from the norm can also characterize other pathologies.

Lipase in the blood is increased - causes:

    Acute pancreatitis;

    Cholecystitis;

    cholelithiasis, cholestasis;

    Oncological diseases of the pancreas;

    Diabetes;

  • Obesity;

    Perforation of an ulcer of the pancreas or stomach;

    The use of certain medications (Indomethacin, Heparin, barbiturates, narcotic painkillers).

Lipase in the blood is lowered - the reasons:

    Condition after resection of the pancreas;

    Unbalanced, poor nutrition;

    congenital feature of the body.

Norm:

    Women and men - 20-130 U / l

    Children - 100-600 U / l

The general term "alkaline phosphatase" when deciphering the results of biochemical analysis means as many as 11 isoenzymes. Of greatest diagnostic importance are the hepatic, biliary, intestinal, bone and placental types of alkaline phosphatase. This enzyme plays a leading role in calcium-phosphorus metabolism - it splits off phosphoric acid residues from its organic compounds.

In children, the content of alkaline phosphatase in the blood plasma is significantly higher than in adults, especially at the peak of growth, that is, in infancy and puberty. This is due to the fact that their skeleton, organs and tissues are actively formed and developed. And in the elderly, especially women, alkaline phosphatase serves as a marker of the risk of osteoporosis. In addition, the placental isoenzyme responds to the presence of tumors of the female genital area, such as cervical cancer. During pregnancy, closer to childbirth, the level of total alkaline phosphatase in the body of the expectant mother also increases. But this is the norm, but the pathological changes in this “biochemistry” indicator need to be discussed separately.

Alkaline phosphatase in the blood is increased - causes:

    Cirrhosis, necrosis, primary liver cancer or metastases to it from other organs;

    Cholangitis, cholecystitis, cholelithiasis, biliary colic and obstructive jaundice;

    Congenital osteonephropathy;

    prematurity;

  • cytomegaly;

    osteomalacia;

    The period after a bone fracture;

    Malignant processes in bone tissue (sarcoma);

    Paget's disease;

    Leukemia, lymphogranulomatosis;

    Infectious mononucleosis;

    multiple myeloma;

    Hyperparathyroidism, diffuse toxic goiter;

    Sarcoidosis;

    Inflammatory and oncological diseases of the female genital organs and mammary glands;

    Deficiency of calcium and phosphorus.

Alkaline phosphatase in the blood is lowered - causes:

    Osteoporosis;

    Myxedema;

    Severe forms of anemia;

    Deficiency of vitamins C, B6, B9, B12, zinc, magnesium;

    Excess vitamin D due to uncontrolled intake of dietary supplements;

Norm:

    Women and men - 0.1-0.63 U / l

    Children - 0.67-1.07 U / l

Acid phosphatase, or rather, its prostatic isoenzyme (PSA), serves as a reliable marker for the presence of an oncological process in the male genital area. It is for the diagnosis of prostate cancer that a biochemical blood test for the level of acid phosphatase is usually performed, because its other isoenzymes are uninformative. Moreover, if the tumor is localized only inside the prostate, then the indicator exceeds the norm only in 25% of men, and if the malignant neoplasm already metastasizes to other organs and tissues, then in 90% of cases the study will reveal the pathology.

Important: it is impossible to carry out an analysis to determine the content of prostatic phosphatase in the blood within 3 days after any manipulations affecting the organ (finger examination, massage, biopsy, cystoscopy). This will cause an unjustified increase in the indicator.

Acid phosphatase in the blood is increased - causes:

    Prostate cancer, its metastases;

    Multiple myeloma and other myeloproliferative pathologies;

    Gaucher disease;

    thromboembolism;

    Fever Syndrome.

Acid phosphatase in the blood is lowered - causes:

    thrombocytopenia.

Norm:

    Women - 4400-13500 U / l

    Men - 5300-12900 U / l

    Children - 6400-15500 U / l

Cholinesterase is an enzyme necessary for the breakdown of choline esters. There are two isoenzymes, simply cholinesterase and acetylcholinesterase, both produced by the liver. But the first is constantly in the blood, where it binds to albumin, therefore it is called serum, and the second is present mainly in the muscles and nervous tissue, where it participates in the conduction of nerve impulses.

When deciphering the results of biochemical analysis, a low level of cholinesterase in the blood characterizes the inhibition of the synthetic function of the liver. This means that hepatocytes do not cope well with their tasks, and the lower the indicator, the more severe the pathology. But too high a concentration of this enzyme does not mean anything good.

Cholinesterase in the blood is increased - causes:

    Diabetes mellitus of the second type;

    Bronchial asthma;

    nephrotic syndrome;

    Obesity;

    Hypertension;

    Exudative enteritis;

    Alcoholism.

Cholinesterase in the blood is lowered - causes:

    Cholangitis, cholecystitis, cholelithiasis;

    Heart failure with congestion in the liver;

    Poisoning with alcohol, arsenic, poisonous mushrooms, insecticides;

    myocardial infarction;

    Malignant diseases of the blood and lymphatic system (lymphogranulomatosis, plasmacytoma);

    Pulmonary embolism;

    Dermatomyositis;

    Hypoalbuminemia;

    postoperative period.

Bilirubin, a yellow-brown substance with toxic properties, has the leading diagnostic value among all the pigments of the human body in the framework of the "biochemistry" of blood. Even people who are far from medicine are well aware that a high level of bilirubin in the blood is very dangerous and is a sign of liver pathologies. Meanwhile, for the first time people encounter this situation when they become parents: everyone knows about the jaundice of newborns, which is the norm and disappears a few days after the baby is born. But if this does not happen on time, you need to sound the alarm. However, a normal indicator of the concentration of bilirubin in the blood is important at any age.

Norm:

    Women, men and children - up to 20.5 µmol / l

Total bilirubin is necessarily present in the form with the results of a biochemical blood test. If this pigment is capable of poisoning the body, why does our body produce it, you ask. The fact is that bilirubin acts as a metabolite during the natural destruction of red blood cells that have served their purpose (up to 85%), as well as other organic compounds that have iron in their composition, for example, myoglobin (up to 15%). Therefore, we cannot completely avoid its presence. However, in a healthy person, the same amount of bilirubin is excreted from the body every day as is released from newly dead red blood cells - about 0.3 grams, so the norm is constantly maintained and intoxication does not occur.

As for newborns, immediately after their birth, their bilirubin content in the blood is quite familiar, about 22 µmol / l. But on the fourth day, it can reach huge values ​​- up to 120 µmol / l. This is due to the fact that the baby's hematopoietic system is rapidly released from fetal erythrocytes in order to develop its own, fresh blood cells.

Important: an abnormally high level of bilirubin in the blood is called hyperbilirubinemia, and the word "hypobilirubinemia" is not used in medical practice, because a person should normally have very little of this pigment.

Total bilirubin is elevated - causes:

    Mass lysis of erythrocytes;

    Primary biliary cirrhosis of the liver;

    cholelithiasis, cholestasis, obstructive jaundice;

    Oncological diseases of the liver and gallbladder;

    Hepatitis of any etiology;

    Violation of the production of enzymes responsible for the binding of bilirubin.

Bilirubin direct (bound)

Norm:

    Women, men and children - 0.86-5.3 µmol / l

Direct, conjugated or conjugated bilirubin is the pigment that is already in the liver and is about to leave the body through the intestines along with bile. The share of this substance accounts for up to 30% of total bilirubin. The associated form does not pose a health hazard, but an increase in this indicator relative to the norm when deciphering the results of a biochemical blood test should still be alarming, because it is always combined with an excess of total bilirubin in the body. And this is due to any pathological conditions in which the outflow of bile is impaired.

Direct bilirubin is elevated - causes:

    Hepatitis of any type;

    Cholelithiasis, cholecystitis, cholangitis;

    Obstructive jaundice;

    Cirrhosis and liver cancer;

Bilirubin indirect (free)

Norm:

    Women, men and children - 1.7-17.0 µmol / l

Indirect, unbound or unconjugated bilirubin is the pigment that has just formed from dead red blood cells and is still in the blood. From there, it can penetrate healthy cells and disrupt their functions, so it must be bound with enzymes as soon as possible and sent to the liver, then it can leave the body along with bile. The share of indirect bilirubin accounts for up to 70% of the total. Exceeding the norms of this indicator when deciphering the results of "biochemistry" of blood indicates a number of serious pathologies, and the more significant the deviation, the worse.

Indirect bilirubin in the blood is elevated - causes:
  • Iron in the blood is increased - causes:

      Hemochromatosis;

      Some anemias are an aplastic, hypoplastic form;

      Deficiency of vitamins B6, B9, B12;

      lead poisoning;

      Violations of hemoglobin synthesis;

      Uncontrolled intake of iron preparations.

    Iron in the blood is lowered - causes:

      Infectious and oncological diseases;

      Iron-deficiency anemia;

      Massive blood loss;

      Poor diet, starvation diets;

      Vegetarian nature of nutrition;

      Severe stress;

      Pregnancy;

      Taking certain drugs (steroid hormones, NSAIDs).

    Norm:

      Women and men - 97-108 mmol / l

      Children - 95-116 mmol / l

    Chlorine is the main anion that regulates the water-salt balance in tandem with sodium and potassium cations. A person needs chlorine to maintain normal blood pressure, prevent hypertension, edema and heart attacks, ensure the smooth functioning of the digestive tract and liver. Deciphering the results of a biochemical blood test for this indicator will be useful to all people who have problems with digestion, the cardiovascular and endocrine systems.

    Important: a condition in which the level of chlorine in the blood is elevated is called hyperchloremia, and the reverse situation is called hypochloremia.

    Chlorine in the blood is elevated - causes:
    • kidney failure;

      Hyperfunction of the adrenal cortex;

      Deficiency of the antidiuretic hormone vasopressin.

    Chlorine in the blood is low - causes:

      Dehydration of the body due to prolonged diarrhea, vomiting or hyperhidrosis;

      Abuse of diuretics and laxatives;

      Traumatic brain injury;

      Education: Moscow Medical Institute. I. M. Sechenov, specialty - "Medicine" in 1991, in 1993 "Occupational diseases", in 1996 "Therapy".

A biochemical blood test is a fairly accurate study that allows you to evaluate the work of internal organs and body systems. However, this analysis has a lot of subtleties, for example, depending on the age of women, the norms of research indicators may differ.

Blood is a unique substance of the human body for detecting certain defects in the human body. It is present in all organs and tissues, therefore it includes many different substances that are formed in the course of their work.

Biochemistry quite accurately helps to determine the presence and level of these substances and, by comparing the data obtained and fixed norms, to learn about the state of the body and the causes of possible diseases. In some cases, this study is the last option a doctor has to confirm the disease.

In addition to diagnostic purposes, biochemical analysis is used in many specialized medicine to determine specific indicators. During the study, blood from a peripheral vein is used. As a rule, blood is taken from the veins located at the elbow joint. However, when access to a given site is not possible, such as a fracture, any other site is suitable.

The place where the sample will be taken is treated as in any other case in which the surface of the epidermis is damaged (by a disinfectant). To obtain the results, from 5 to 10 ml of blood is sufficient, which are collected in a special test tube.

Indications for analysis

As a rule, a biochemical blood test is prescribed for women by a doctor for diagnostic purposes, if violations of the norms are found in the work of certain organs, or the general condition of the patient. Also, the procedure is carried out to check the quality of the prescribed treatment for already identified diseases. At the same time, the list of necessary indicators is determined by the doctor individually for each case.

Indications for analysis may be problems with the following organs:

  • liver;
  • kidneys;
  • biliary system;
  • endocrine system;
  • blood systems;
  • musculoskeletal system.

Together with some other procedures, biochemistry makes it possible to identify the correct pathology of almost any organ.

Preparation for blood collection

To obtain correct data, blood donation must be carried out, observing some important rules:

Deciphering the results of the analysis

Since the norm of a biochemical blood test in women differs significantly from the norm in men, the gender of the patient is first determined by doctors. The same thing happens with age.

This process is an analysis of the comparison of existing norms for certain indicators and the data obtained during the diagnostics. The analysis is carried out on a special form - a table containing all the indicators that are determined by the biochemical laboratory.

A ready-made table with the results is provided to the patient, from which he can find out the ratio of his indicators to the norm. The decryption process, in general, occurs quite quickly: within 2-3 days. Also in today's world decryption can be done independently using special online platforms on the Internet.

If any indicators deviate from the norm, the doctor prescribes additional examinations to determine the most accurate diagnosis.

Table for decoding a biochemical blood test in adults

Indicator in the study Norm
Protein total 63-87 g/l
Protein fractions: albumins

globulins (α1, α2, γ, β)

35-45 g/l
Creatinine 44-97 µmol per l - in women, 62-124 - in men
Urea 2.5-8.3 mmol/l
Uric acid 0.12-0.43 mmol / l - in men, 0.24-0.54 mmol / l - in women.
total cholesterol 3.3-5.8 mmol/l
LDL less than 3 mmol per l
HDL greater than or equal to 1.2 mmol per l - in women, 1 mmol per l - in men
Glucose 3.5-6.2 mmol per l
Bilirubin total 8.49-20.58 µmol/l
Bilirubin direct 2.2-5.1 µmol/l
Triglycerides less than 1.7 mmol per l
Aspartate aminotransferase (abbreviated as AST) alanine aminotransferase - the norm in women and men - up to 42 U / l
Alanine aminotransferase (abbreviated as ALT) up to 38 U/l
Gamma-glutamyl transferase (abbreviated as GGT) normal GGT values ​​- up to 33.5 U / l - in men, up to 48.6 U / l - in women.
Creatine kinase (abbreviated as CK) up to 180 U/l
Alkaline phosphatase (abbreviated ALP) up to 260 U/l
α-amylase up to 110 E per liter
Potassium 3.35-5.35 mmol/l
Sodium 130-155 mmol/l

Norms of biochemistry in women by age: table

Substance Indicators The norm in women Notes
Squirrels total protein 64-83 g/l In children under 17: 47-73 g/l

Over 60 years old: 62-81 g/l

Albumen Z5-50 g/l For women over 60: 34-38 g/l
C-reactive protein Up to 0.5 mg/l
myoglobin 13-76 mcg/l.
Rheumatoid factor 0
ferritin 13-400 µg/l Children may have different
Enzymes AlAT Up to 31 U/l
ASAT Up to 31 U/l In children under 18 years of age, other indicators
Alpha amylase 27-100 U/l
Phosphatase alkaline Up to 240 U/l
Lipids Triglycerides 35-40 years old - 0.45-1.99

40-45 years old - 0.51-2.16

45-50 years old - 0.52-2.42

50-55 years old - 0.59-2.63

55-60 years old - 0.62-2.96

60-65 years old - 0.63-2.70

total cholesterol 3-6 mmol/l
Cholesterol-HDL 0.8-2.2 mmol/l
Cholesterol - LDL 1.92-4.51 mmol/l
Carbohydrates Glucose 3.88-5.83 mmol/l For women 60+: up to 6.38 mmol/l
Fructosamine 0-285 µmol/l
Pigments Bilirubin total 3.4-17.1 µmol/l
Bilirubin direct 0-3.4 µmol/l
Nitrogenous components Creatinine 53-97 µmol/l
Uric acid 150–350 µmol/l In children 120–320 µmol/l
Urea 2.2–6.7 mmol/l

Normal indicators during pregnancy

Women in position experience huge changes in the body, so the norms of a biochemical blood test for some categories differ from those of other patients. When carrying a child, some criteria change.

Changes for the 3rd trimester:

  • increase in globulin;
  • decrease in urea;
  • increase in phosphatase.

Near the end of pregnancy:

  • decrease in creatine;
  • a slight decrease in potassium;
  • a decrease in magnesium;
  • reduced iron levels;
  • albumin level can be changed in both directions.

The norms of a biochemical blood test in pregnant women differ from the standard ones in some categories. Such changes are normal and are associated with physiological changes in the body of the expectant mother.

The remaining indicators in pregnant women should remain unchanged, which will indicate a positive pregnancy, as well as the health of the mother and baby.

The norm of trace elements in women

Each of the trace elements is an important component of the woman's body, contributing to its proper functioning. Therefore, they must be treated with due care.

Standard micronutrients that can be seen through biochemistry include:

  • Sodium. Promotes the absorption of calcium, participates in the reaction of the skin to external stimuli. Abnormalities can prove the presence of diabetes, urinary tract problems, kidney or liver failure (134-143 mmol / l);
  • Potassium. Responsible for the work of the heart. Non-compliance with fixed indicators may indicate problems with blood vessels, gastrointestinal organs, diabetes and cancerous tumors (3.5-5.3 mmol / l);
  • Chlorine. Participates in the normalization of the pH of the circulatory system. A discrepancy with fixed indicators may indicate the inoperability of many organs, a lack of fluid in the body, and hormonal abnormalities. (93-113 mmol/l);
  • Phosphorus. Contributes to the normal functioning of various human tissues. (1.43-2.13 mmol/l up to 2 years; 1.43-1.78 mmol/l up to 13 years; 0.87-1.43 mmol/l less than 60 years; 0.93-1.32 mmol/l for the elderly);
  • Magnesium. It contributes to the normalization of processes at the cellular level, is responsible for the reaction of the muscle cover to external stimuli. Non-compliance with fixed indicators may indicate diseases of internal organs, as well as ill-conceived nutrition (0.66-1.03 mmol / l);
  • Iron. Responsible for the normal functioning of the digestive tract and normalization of metabolism (8.9-30.03 mmol / l in the elderly; 9-23 mmol / l up to 14 years; 7-18 mmol / l up to 2 years);
  • Calcium. Responsible for the work of various internal systems, also takes part in the formation of bones. Non-compliance with the norm can mean a lack of vitamins, ill-conceived nutrition, diseases of human organs and systems (2.13-2.6 mmol / l);
  • Zinc(13-18 mmol/l);
  • AT 9(3-17 ng/ml).

In some cases, the indicators may deviate from the norm, for example, during pregnancy. Therefore, you should not draw premature conclusions on your own, but entrust this to a specialist.

Biochemistry indicators

Squirrels


Carbohydrates

  • Glucose. The main task of this element is to saturate the body with energy. A deviation from these figures may be the result of diabetes, pancreatic cancer, or a reaction to certain drugs.
  • Fructosamine. This component combines protein and glucose.

Enzymes


Pigments

Bilirubin total. Responsible for staining the skin and mucous membranes. Includes:

  • Direct bilirubin, deviations of which can indicate problems with the biliary tract and liver.
  • Bilirubin is indirect, is a product of the breakdown of hemoglobin, the work of which can be seen when the color of the bruise changes.

Lipid spectrum

  • Triglycerides. This element enters the blood through the synthesis of carbohydrates from the liver, and their food elements enter. The norms differ significantly depending on the sex and age of the patient, as well as in women in position. Deviations from the norm can be recorded due to diseases of the cardiovascular system, thyroid gland, liver, as well as in the presence of diabetes.
  • total cholesterol. It is the value of the sum of "positive" and "negative" cholesterol.
  • Cholesterol-HDL ("positive"). Helps in determining predisposition to atherosclerosis, processes and removes fats from the body.
  • Cholesterol–LDL (“negative”). The function of this element is the distribution of cholesterol throughout the body, which comes with food. Its increase in the blood indicates the presence of problems.

Nitrogenous components

  • Creatinine Produced through protein metabolism, excreted from the body in the urine. A decrease in a substance in the blood is an indicator of nutritional problems, and an increase means a pathology of the kidneys, thyroid gland.
  • Uric acid. It originates in the liver, excretion from the body is carried out in the same way as creatinine. Malnutrition, alcohol abuse, kidney and liver diseases can lead to deviations from the norm.
  • Urea. It appears in the body as a result of the breakdown of ammonia. Non-compliance with the norm can be in pregnant women and in people leading a vegetarian lifestyle, as well as as a result of diseases of the kidneys and liver.

Protein: causes of deviations from the norm

The first thing to know when analyzing protein abnormalities is that they can be of 3 types:

  • Relative. They depend on the amount of water that circulates in the blood. The indicators can be affected by both a lack and an excess of fluid.
  • Absolute. Associated with a change in the rate of protein metabolism, which can be caused by disease-causing processes or physiological ones, such as pregnancy.
  • Physiological. They can be caused by any changes or stresses on the body: pregnancy, lactation, hard work with “hands”, abundant consumption of food with a high concentration of protein. This type of deviation has nothing to do with pathological processes in the body.

Deviations can be both downward and upward, which is due to various reasons.

A decrease in protein levels can be caused by the following cases:

  • Parenchymal hepatitis;
  • chronic bleeding;
  • anemia;
  • kidney disease, which causes protein loss during urination;
  • malnutrition, the use of protein foods in insufficient quantities;
  • problems with the metabolic process;
  • various intoxications;
  • fever.

A decrease in protein that is not associated with a disease can occur due to pregnancy (last trimester), the preparation of an athlete for competitions, and a recumbent lifestyle.

Unlike a decrease in the amount of protein in the blood, its increase is in no way associated with physiological abnormalities. In the event of an increase in this indicator, the patient immediately requires examination and supervision of the attending physician.

The reasons for the increase in protein in the blood include:

  • Hepatitis;
  • cirrhosis of the liver;
  • lupus;
  • cholera;
  • profuse bleeding, etc.

Glucose: causes of low and high levels

A high concentration of glucose in human blood may be due to problems:

  • endocrine system;
  • pancreas;
  • liver and kidneys;
  • diabetes;
  • bleeding in the brain or heart.

In the case of a decrease in glucose, to the above reasons, you can add:

  • an overdose of insulin;
  • oncology;
  • poisoning with alcohol or chemical products;
  • steroid use;
  • hard physical work.

What does the level of slag say

Slags, they are also products of nitrogen metabolism, are very toxic and their increase in the human body threatens with serious consequences. Caused by the increase in slag can be various reasons, however there is always some kind of pathological process in them:

  • serious diseases of the kidneys and liver;
  • diabetes;
  • gout;
  • dystrophy and many other pathologies.

The reduction of toxins, as a rule, does not carry serious causes and consequences, but it also requires a check with a doctor, as it may turn out to be, for example, liver failure.

Diagnosis of possible violations

With the help of a blood test for biochemistry, many problems and pathologies in the human body can be diagnosed, but deviation from the norm, especially in women, does not always carry a dangerous omen. The same pregnancy can affect many indicators, which should not be considered something bad.

To confirm or refute a possible diagnosis, after deciphering, the attending physician will prescribe additional studies, as well as advise which specialists should be visited and what should be changed in lifestyle and nutrition to restore normal biochemistry.

Video about the norms of a biochemical blood test in women

Deciphering a biochemical blood test: norms, tables:

Biochemical blood test for ALT, AST, ALAT in women and men:

A biochemical blood test is important for the diagnosis of almost all diseases, so it is prescribed in the first place.

What indicators are included in a standard biochemical blood test?

Glucose (in blood)

The main test in the diagnosis of diabetes mellitus. This analysis is very important in the selection of therapy and evaluation of the effectiveness of diabetes treatment. A decrease in glucose levels is observed in some endocrine diseases and liver dysfunction.

Normal blood glucose levels:

Bilirubin total

The yellow pigment of the blood, which is formed as a result of the breakdown of hemoglobin, myoglobin and cytochromes. The main reasons for the increase in the amount of total bilirubin in the blood: damage to liver cells (hepatitis, cirrhosis), increased breakdown of red blood cells (hemolytic anemia), impaired bile outflow (for example, cholelithiasis).

Normal values ​​​​of total bilirubin: 3.4 - 17.1 μmol / l.

Direct bilirubin (conjugated bilirubin)

Fraction of total bilirubin in blood. Direct bilirubin increases with jaundice, which has developed due to a violation of the outflow of bile from the liver.

Normal values ​​of direct bilirubin: 0 - 7.9 µmol/L.

Bilirubin indirect (bilirubin unconjugated, free)

The difference between total and direct bilirubin. This indicator increases with increased breakdown of red blood cells - with hemolytic anemia, malaria, massive hemorrhages in tissues, etc.

Normal values ​​of indirect bilirubin:< 19 мкмоль/л.

AST (AST, aspartate aminotransferase)

One of the main enzymes synthesized in the liver. Normally, the content of this enzyme in the blood serum is small, since most of it is located in hepatocytes (liver cells). An increase is observed in diseases of the liver and heart, as well as with long-term use of aspirin and hormonal contraceptives.

Normal values ​​of ASAT:

  • Women - up to 31 U / l;
  • Men - up to 37 U / l.

ALT (ALT, alanine aminotransferase)

An enzyme synthesized in the liver. Most of it is located and works in the liver cells, so the normal concentration of ALT in the blood is low. An increase is observed with mass death of liver cells (for example, with hepatitis, cirrhosis), severe heart failure and blood diseases.

Normal ALT values:

  • Women - up to 34 U / l;
  • Men - up to 45 U / l.

Gamma-GT (gamma-glutamyltransferase)

Normal gamma-GT values:

  • Women - up to 38 U / l;
  • Men - up to 55 U / l.

Phosphatase alkaline

An enzyme widely distributed in human tissues. The hepatic and bone forms of alkaline phosphatase, the activity of which is determined in the blood serum, are of the greatest clinical importance.

Normal values ​​of alkaline phosphatase: 30-120 U / l.

Cholesterol (total cholesterol)

The main blood lipid, which enters the body with food, is also synthesized by liver cells.

Normal cholesterol levels: 3.2-5.6 mmol / l.

Low density lipoproteins (LDL)

One of the most atherogenic, "harmful" fractions of lipids. LDL is very rich in cholesterol and, transporting it to vascular cells, lingers in them, forming atherosclerotic plaques.

Normal LDL values: 1.71-3.5 mmol / l.

Triglycerides

Neutral fats in blood plasma are an important indicator of lipid metabolism.

Normal triglyceride levels: 0.41-1.8 mmol / l.

total protein

An indicator that reflects the total amount of proteins in the blood. Its decrease is observed in some diseases of the liver and kidneys, accompanied by increased excretion of protein in the urine. Increase - with blood diseases and infectious and inflammatory processes.

Normal values ​​​​of total protein: 66-83 g / l.

Albumen

The most important blood protein, accounting for about half of all serum proteins. A decrease in the content of albumin can also be a manifestation of certain diseases of the kidneys, liver, and intestines. An increase in albumin is usually associated with dehydration.

Normal albumin values: 35-52 g/l

Potassium (K+)

An electrolyte found predominantly within cells. Raise the level of potassium in the blood is most often observed in acute and chronic renal failure, a sharp decrease in the amount of urine excreted or its complete absence, most often associated with severe kidney disease.

Normal potassium values: 3.5-5.5 mmol / l.

Sodium (Na+)

Electrolyte contained mainly in the extracellular fluid, and in a smaller amount - inside the cells. He is responsible for the work of nervous and muscle tissue, digestive enzymes, blood pressure, water metabolism.

Normal sodium values: 136-145 mmol/L.

Chlorine (Cl-)

One of the main electrolytes, which is in the blood in an ionized state and plays an important role in maintaining water-electrolyte and acid-base balance in the body.

Normal chlorine values: 98-107 mmol/l.

Creatinine

A substance that plays an important role in the energy metabolism of muscle and other tissues. Creatinine is completely excreted by the kidneys, so the determination of its concentration in the blood is of the greatest clinical importance for the diagnosis of kidney disease.

Normal creatinine values:

  • Women - 53 - 97 µmol/l;
  • Men - 62 - 115 µmol / l.

Urea

A substance that is the end product of protein metabolism in the body. Urea is excreted by the kidneys, so the determination of its concentration in the blood gives an idea of ​​the functional abilities of the kidneys and is most widely used to diagnose renal pathology.

Normal urea values: 2.8-7.2 mmol / l.

Uric acid

One of the end products of protein metabolism in the body. Uric acid is completely excreted by the kidneys. P rise concentration of uric acid is found in nephrolithiasis, other kidney diseases occurring with renal failure.

Normal uric acid values:

  • Men - 210 - 420 µmol / l;
  • Women - 150 - 350 µmol / l.

C-reactive protein (CRP)

Normal values ​​of C-reactive protein: 0 - 5 mg / l.

Iron (serum iron)

A vital trace element, which is part of hemoglobin, is involved in the transport and deposition of oxygen and plays an important role in the processes of hematopoiesis.

Normal values ​​of serum iron:

  • Women - 8.95 - 30.43 µmol / l;
  • Men - 11.64 - 30.43 µmol / l.

How to prepare for the study?

The day before taking blood for biochemistry, it is necessary to exclude alcohol intake, 1 hour before smoking. It is advisable to take blood on an empty stomach in the morning. At least 12 hours should elapse between the last meal and blood sampling. Juice, tea, coffee, chewing gum are not allowed. You can drink water. It is necessary to exclude increased psycho-emotional and physical stress.

What is the time frame for the analysis?

How are the results of a biochemical blood test evaluated?

The use of different diagnostic methods by different clinics leads to different results, and units of measurement may also differ. Therefore, for the correct interpretation of the result of a biochemical blood test, consultation with the attending physician is required.

Biochemical type analysis is a proven diagnostic technique in the laboratory. Which allows you to make accurate judgments about how well many vital organs are functioning. By taking into account these indicators, it is possible to carry out diagnostic procedures for a large number of diseases. This type of procedure is widely applicable in numerous industries. Let's consider what is biochemical blood test, decoding in adults (normal) in the table. Table values ​​reflect a clear picture that takes place in a healthy person. With violations and deviations, we can talk about health problems.

Blood is a tissue isolated as a unique element. A distinctive feature of this fluid is that it is present in absolutely all organs. Due to this, its composition is full of numerous substances, it has certain norms of value. Thanks to competent analysis, it is possible to determine the level of certain substances with absolute accuracy and compare actual criteria with regulatory data. Thanks to this approach, you can understand the functional position of the organs. And in the presence of pathologies, determine their nature and stage.

In a number of some diseases, biochemistry acts as an option to confirm the diagnosis objectively. In addition to the traditional diagnostics used to identify pathologies, there may be data on other indicators of different levels of medical fields.

Indications

Before considering in detail biochemical blood test (decoding in adults is the norm in the table), it is necessary to determine the main substances, the content of which must be known. Usually this type of analysis is prescribed by the attending physician to patients who are in the hospital or outpatient type of treatment. The study should be carried out for further control. Since each person is unique, as well as his pathological case, certain indicators are taken into account, determined individually. The need to normalize substances and elements depends on the state.

  • kidney disease;
  • difficulties in the thyroid gland;
  • ailments associated with the work of the heart;
  • problems with the apparatus of movement;
  • diseases of the circulatory function;
  • gastrointestinal difficulties.

If you combine this type of analysis with the active use of instrumental diagnostic methods, biochemistry becomes valuable. Because it helps to establish the correct diagnostic information.


Decoding is the fact of comparing the obtained values ​​​​with standard indicators and making a number of conclusions. The form contains a list of criteria that are determined by the laboratory. Based on one or two values, conclusions can be drawn; often, a diagnostic complex is required to achieve this goal. Consider what each of the indicators means - first for women, and then for males.

total protein

This parameter is the totality of all plasma proteins. The level of this component is determined in case of diseases of the blood and some internal organs. If the protein is elevated, this indicates the presence of some pathological processes and conditions.

  • dehydration in the body;
  • problems with the gastrointestinal tract (diarrhea, nausea, burns, vomiting);
  • infectious processes of acute and chronic type;
  • oncological and neoplastic neoplasms.

If the criterion has an underestimated value, we are talking about states.

  • starvation and dystrophy;
  • diseases of the liver, kidneys;
  • bleeding of acute and chronic type;
  • thyrotoxicosis.

In women, this figure should normally be 64-83 g / l.

Bilirubin

This is a pigment formed during the reaction of the destruction of red blood cells. The exchange of this substance is carried out due to the fact that the liver performs its work effectively. Therefore, the definition of this parameter, which is of particular value in determining liver diseases, anemia, is relevant. The study of this indicator involves determining the level of free and bound fractions.

Exceeding the norm indicates pathological stages.

  • Acute viral and toxic hepatitis;
  • cirrhosis and other hepatic phenomena;
  • hemolytic phenomena with any etiology.

A decrease in the indicator characterizes the presence of several diseases.

  • Tumors in the pancreas;
  • inflammatory process.

The normative value of this indicator for women is from 3 to 17 micromol / l for the general indicator. As for the content of direct bilirubin, the normative content matters - from 0 to 3.41 m mol / l.

Enzymes

If we determine the degree of enzyme activity in the body, then we can say that the main diagnostic goal has been achieved, and a general judgment can be made. If there is an increase in the number of enzymes, this indicates the presence of a number of diseases.

  • Damage to organ cells;
  • problems with the functioning of tissues;
  • acute hepatitis;
  • liver necrosis;
  • myocardial infarction;
  • injuries and consequences;
  • skeletal muscle disease;
  • tissue hypoxia.

The condition and content of other elements are also checked - lipids (in particular, cholesterol), carbohydrates - analysis for glucose and fructose, nitrogenous substances, inorganic elements and trace elements.

In pregnant women, if there is a deviation from the normative value, this is an acceptable phenomenon. Since, in connection with the "interesting situation", changes occur in the body and pathological processes may occur. In this regard, the total protein, carbohydrates and lipids can change their composition. Such processes are also associated with changes in hormonal levels. If deviations are found, the doctor makes a diagnosis and selects the optimal method for solving the problem.


The analysis data for men differ significantly from those for women. This is due to the difference in the functioning of the body and with different hormonal levels. Consider the main indicators that biochemical blood test, decoding in adults, the norm in the table in particular for men.

  • The content of total protein is 64-83 g / l, albumin - 33-50 g / l (general indicator for men and women). CRP (C reactive protein) - up to 0.5 g / l.
  • The content of enzymes has the following indicators: up to 44 units / l (alanine aminotransferase), up to 40 units. l (from 10 - aspartate aminotransferase), up to 120 (alpha-amylase).
  • The content of lipids, in particular, cholesterol - 3-6 m mol / l, cholesterol associated with low-density proteins - from 2.1 to 4.7.
  • Carbohydrate content: glucose - 3.8-5.82 m mol / l.
  • Bilirubin (total and direct, respectively) - up to 17 and up to 3.41 m mol / l.
  • The content of nitrogenous substances of a low molecular type is uric acid (210-319 micromol / l), urea (2.39-6.39 micromol / l).
  • The content of potassium, calcium, phosphorus, sodium and magnesium in men and women does not differ.

There are differences in the analysis indicators for male representatives, but they do not apply to all elements.

The presented table is relevant, offering for review the basic content parameters for all gender and age categories. On their basis, it is possible to reconcile actual values ​​with standard indicators and draw a conclusion about the current state of health.

Have you done a biochemical blood test? Did the transcripts in adults and the norm in the table match? Share your experience and opinion on the forum!

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