Diagnosticum Salmonella erythrocyte vi antigenic liquid. Diagnosticum erythrocyte salmonella vi-antigenic

The Diagnosticum Salmonella VI-antigen reagent kit is intended for the detection in human blood serum of specific antibodies to the Salmonella typhus VI-antigen in a passive hemagglutination reaction (RPHA).

  1. SET CHARACTERISTICS

2.1. Principle of the method.

The active principle of Diagnosticum Salmonella VI-antigen is the Vi-antigen fixed on the surface of red blood cells. When interacting with sera containing antibodies to the Vi-antigen, the phenomenon of erythrocyte agglutination is observed.

2.2. SET CONTENTS

Reagents Quantity
Diagnosticum erythrocyte salmonella Vi-antigenic liquid- is a 1% suspension of formalinized and sensitized Salmonella Typhoid sheep erythrocytes with B-antigen in a phosphate buffer solution (pH 7.2 + 0.2; concentration 0.06 mol/l). Homogeneous suspension of brown color without flakes; upon settling, 2 layers are formed: a dense brown sediment of erythrocytes and a transparent yellowish supernatant liquid 1 bottle - 6 ml
Salmonella diagnostic serum adsorbed B receptor dry - homogeneous mass from white with a brownish tint to beige 1 bottle – 0.1 ml
1% suspension of formalinized, unsensitized sheep erythrocytes— homogeneous suspension of brown color without flakes; upon settling, 2 layers are formed: a dense brown sediment of erythrocytes and a transparent yellowish supernatant liquid 1 bottle –
Solution for diluting serum and staging RPGA - 0.9% sodium chloride solution - transparent colorless liquid, pH from 6.5 to 7.5 2 bottles – 8 ml each
Single-use round-bottom plate for immunological reactions - consists of 8 rows, each of which includes 12 holes with a transparent, colorless, round bottom 1 PC
  1. ANALYTICAL AND DIAGNOSTIC CHARACTERISTICS.

3.1. The diagnosticum must be agglutinated in the RPHA with the diagnostic Salmonella serum adsorbed by the dry B receptor in a dilution of no less than 1:160.

The conditional level of diagnostic characteristics of blood serum from healthy people should be considered a serum dilution of no higher than 1:20.

3.2. Analysis time: 2 hours.

3.3. The set contains 8 definitions.

  1. PRECAUTIONARY MEASURES

When working with the kit, you should comply with the “Rules of design, safety precautions, industrial sanitation, anti-epidemic regime and personal hygiene when working in laboratories (departments, departments) of sanitary and epidemiological institutions of the USSR Ministry of Health (M., 1981).

The analyzed sera, as well as reagents in contact with them, should be considered as potentially infected, capable of long-term preservation or transmission of HIV, hepatitis virus or any other causative agent of viral infection - they should be handled with care:

  • work with rubber gloves;
  • when pipetting it is necessary to use automatic dispensers;
  • upon completion of work, treat the analyzed sera and reagents and instruments in contact with them with a disinfectant solution
  • Wipe equipment with 70% ethyl alcohol before and after use.

The analyzed sera must be inactivated at a temperature of 56 0 C for 30 minutes.

The diagnostic Salmonella serum adsorbed by the B receptor, included in the kit, is dry and inactivated.

Objective analysis results are guaranteed if the following conditions are met:

  • All kit reagents should be stored at temperatures from 2 to 8 0 C;
  • do not use expired reagents;
  • do not use the kit reagents if there is no appropriate marking on their packaging;
  • To perform RPHA, use reagents included only in this kit.

Vi-Diagnosticum

Diagnosticum Vi

Vi-Antigenic

A properly conducted blood test helps to detect the causative agents of various complex diseases in the body at the early stages of their development, and sometimes even before clinical symptoms of the disease appear. Very often, doctors prescribe to patients an agglutination reaction test. Next we will figure out what it is - a RPGA blood test, when is it used and what can it tell us?

Operating principle

The indirect hemagglutination reaction (also called the passive hemagglutination reaction, also known as RPHA, RNGA) occurs when red blood cells that have adsorbed an antigen are exposed to immune serum that matches the given antigen.

Studies have proven that this method is significantly superior to other serological tests in terms of specificity and sensitivity. Therefore, it is often used to detect diseases caused by bacteria or rickettsia. Antigens for such analysis can be bacterial extracts, purified antigens of various microbes, and components of bacterial vaccines.

After a pathogenic bacterium enters the human body, it begins to produce specific and nonspecific antibodies, forming a specific immune response. In the case of syphilis, the causative agent of which is Treponema pallidum, which belongs to the gram-negative spirochetes, non-treponemal or treponemal antibodies are produced in the human blood. Laboratory diagnostic tests are based on their identification, which should confirm or refute the presence of the causative agent of the virus in the body.

With RPHA, red blood cells, the surface of which has adsorbed treponema pallidum antigens, when serum with antibodies to treponema from material from a person infected with syphilis is added, stick to each other, that is, they agglutinated.

Reliability of the study

It is important to remember that antibodies to the pale spirochete begin to appear in the body of infected people 2-4 weeks after infection, and in some cases this period can extend up to 6 weeks.

For this reason, the sensitivity of the analysis for RPHA at the primary stage of the disease is about 86%, which is significantly inferior to the accuracy of diagnosing patients at the next two stages. The sensitivity of the analysis for such patients, as well as for carriers of latent syphilis, reaches 99-100%.

However, the passive hemagglutination reaction has a very high specificity, which reaches a level of 96-100%.

This makes it possible to use this examination to confirm the diagnosis in case of a positive reaction from a preliminary non-treponemal study, for example, a microprecipitation reaction of bladder cancer.

Considering that the sensitivity of treponemal tests, including RPGA, significantly exceeds the sensitivity of non-treponemal methods, such examinations have become increasingly prescribed when conducting screening tests for syphilis. However, if a positive reaction from a screening test is received, another specific (treponemal) analysis, but not RPGA, is required to clarify the diagnosis.

Analysis transcript

When serum with antibodies to treponema from the material of a person infected with syphilis is added to the reagent with which the study is carried out, red blood cells agglutinate, as a result of which they precipitate.

The number of sticky red blood cells is influenced by the level of antibodies in the serum. Therefore, passive hemagglutination not only shows the presence of antibodies, but also allows you to determine their quantity. The result of the study is presented by the level of antibody titer.

A positive reaction indicates the presence of the pathogen in the patient’s body. However, during the diagnostic process, false-positive reactions may occur, the number of which does not statistically exceed the level of 0.05-2.5% of the total number of studies.

A positive RPHA reaction in people not infected with syphilis may occur if:

  • systemic connective tissue diseases,
  • in the patient's blood antibodies to pathogens similar to Treponema pallidum,
  • physiological pathologies, such as myocardial infarction,
  • hepatitis B or C,
  • oncological diseases,
  • typhus, leptospirosis, tuberculosis,
  • HIV infections,
  • borreliosis of tick-borne etiology,
  • extensive injuries or fractures,
  • pregnancy,
  • in case of injection of narcotic drugs.

In most cases, false-positive reactions are accompanied by a low titer. High titres are typical for the secondary stage of the disease and previously latent syphilis. However, they can also appear during a false-positive reaction in patients with malignant neoplasms.

In people who have had syphilis at least once, the RPHA reaction remains positive for the rest of their lives.

Rare exceptions can be those situations when the disease was identified at an early stage of development, after which intensive and effective therapy was carried out. Therefore, RPGA analysis cannot be used to assess the dynamics of recovery or comparative diagnosis of early or late stages of the disease.

If a positive reaction is obtained, it is necessary to examine family members of the sick person and people who have had sexual contact with him.

A negative reaction can be obtained in the following cases:

  • the person does not have syphilis,
  • blood was taken incorrectly for testing,
  • 2-4 weeks have passed since infection, and the production of antibodies has not yet begun.

In any case, the result of the study must be assessed in combination with additional laboratory and anamnestic indicators.

Who is the analysis indicated for?

A doctor may refer patients to donate blood for RPHA in the following cases:

  • in the presence of clinical manifestations of syphilis: ulcerative rashes, enlarged lymph nodes, diffuse alopecia and others,
  • if you suspect a possible infection in case of contact with already sick people,
  • donors wishing to donate blood,
  • people undergoing annual preventive examinations or issuing health certificates,
  • patients with a positive screening test,
  • before hospitalization in an inpatient hospital,
  • during preoperative examination,
  • to identify pathogens of salmonellosis, diphtheria, dysentery using the RPGA method with the appropriate diagnosticum.

Procedure for conducting the study

A venous blood sample donated by the patient is sent for testing. In order not to receive an erroneous conclusion, the patient should be responsible in preparing for the analysis. In order for the test results to be reliable, you should adhere to the following recommendations:

  • The test should only be taken on an empty stomach.
  • On the day of the analysis, you can drink mineral water without gas in minimal quantities.
  • You should not smoke for at least 30 minutes before the analysis, but it is better to increase this time to several hours.
  • A direct ban is imposed on the consumption of alcoholic beverages.
  • Patients who need to regularly use any medications must inform the doctor referring them for examination.
  • If you feel unwell or feel unwell, you must notify the nurse who is taking the blood or the doctor at the outpatient clinic where you need to take the test.
    • Be responsible not only about the question of where to get tested, but also about preparing for the examination.

      Diagnosis of other infectious diseases

      One should not think that a study such as RPGA can be carried out only to identify the causative agent of syphilis in the body.

      An analysis with a salmonella diagnosticum allows you to detect the presence of an infection in the digestive system - salmonella. Starting from the fourth day after infection, the body produces antibodies to Salmonella antigens, which the RPGA method helps to identify. A negative result indicates the absence of infection, and a positive titer, increasing from 1:200 to 1:800 in the acute phase, will indicate its presence.

      The method of performing RPGA with a diphtheria marker makes it possible to diagnose diphtheria and assess immunity after vaccination. Antibodies begin to be produced by the immune system the very next day after infection, and remain in the body for several weeks. The sensitivity of this analysis is superior to the bacteriological research method. A titer of 1:80 confirms the presence of diphtheria in the body.

      The dysentery marker for RPHA most accurately detects shigellosis (bacterial dysentery), even compared to the laboratory diagnostic method through bacterial culture. If the patient does not receive quality treatment, the disease develops into a chronic process, in which relapses often occur. The analysis allows you to diagnose the acute and chronic phases of diarrhea, identify the causative agent of dysentery, distinguish bacterial shigellosis from colorectal cancer, endocrine disorders or inflammation of the colon. A negative reaction indicates the absence of the bacillus, and its presence is confirmed by a titer of 1:80 for children or 1:320 for adults.

      Conducting a test with a measles marker allows you to determine measles disease. Such an examination may become an alternative to the RTGA analysis often performed for diagnosing measles.

      So, RPGA blood test - what is it? To summarize, we can safely say that this is a modern, highly sensitive and reliable method for diagnosing various diseases of bacteriological etiology.

      In contact with

      Registration certificate No. RZN 2016/3905 dated 04/04/2016

      Purpose

      The set of reagents "Diagnosticum erythrocyte salmonella Vi-antigen for RPHA" (ED-Vi) is intended for the detection of antibodies to the Vi-antigen of the causative agent of typhoid fever in human blood sera by the reaction of passive hemagglutination (RPHA).

      Characteristics of the set

      Operating principle

      In the presence of antibodies to the causative agent of typhoid fever, hemagglutination of chicken erythrocytes sensitized with the Vi antigen is observed, which leads to the formation of an “umbrella” of settled erythrocytes at the bottom of the U-shaped wells of the plate. In the absence of antibodies to the causative agent of typhoid fever, settled red blood cells form a “dot”.

      Set contents

      Reagent name Description Quantity in set
      Diagnosticum erythrocyte salmonella Vi-antigen, dry 6% (EDS) Formalized chicken erythrocytes sensitized with the S. typhi Vi antigen. Dry hygroscopic mass of brown color. After dissolution, the suspension is red-brown in color. 1 fl., from 0.6 ml
      Salmonella diagnostic serum adsorbed, Vi receptor, dry (diluted 1:20, (K+)) Rabbit serum Salmonella adsorbed, Vi receptor, diluted 1:20. Dry hygroscopic porous mass of white color. After dissolution, it is a transparent yellowish or colorless liquid. 1 fl., from 0.3 ml
      Test sample diluent (RSD) Transparent liquid of blue-violet color. 1 fl., 10 ml
      Phosphate buffer solution (PBS) Transparent colorless liquid. 1 fl., 10 ml
      Single use polymer tablet for immunological reactions Single-use polymer tablet for immunological reactions made of transparent colorless polystyrene. 1 PC.

      Diagnostic characteristics

      The diagnosticum must be agglutinated in the RPHA with diagnostic salmonella serum adsorbed, Vi receptor, dry (1:20 dilution), to the titer indicated on the serum label. The conditional level of diagnostic characteristics of blood serum from healthy people should be considered a serum dilution of no higher than 1:20. Analysis time is 3040 minutes. The kit is designed to test 42 blood sera in the screening option or 10 blood sera in the titration option.

      Precautionary measures

      The kit is intended for in vitro diagnostic use only. The substances included in the kit are inactivated and safe. When working with the kit, you should comply with SP 1.3.2322-08 and SanPiN 2.1.7.2790-10.

      Additional equipment and materials

      Equipment, materials, solutions:

      • 1-channel pipette dispensers with variable dosing volume 5 - 40 µl; 40 - 200 µl; 200 - 1000 µl and 1000 - 5000 µl;
      • 8- or 12-channel pipette dispensers with variable dosing volumes of 5 - 40 µl and 40 - 200 µl;
      • distilled water (GOST 6709-72).

      Analyzed samples

      The blood serum samples under study are stored at a temperature of 2 to 8 °C for no more than 3 days from the moment of blood collection. Whey can be stored frozen at a temperature not exceeding minus 18 °C for no more than 1 year. Before use, samples are thawed at a temperature of 16 to 25 °C and mixed by shaking. Re-freezing is not allowed. Samples with bacterial growth and hemolysis should not be used. Before performing the reaction, the test sera are heated at 56 °C for 30 minutes.

      Carrying out analysis

      Preparation of control diagnostic serum (K+)

      Prepare a working solution of diagnostic Salmonella serum adsorbed, Vi receptor, dry (1:20 dilution) from 0.3 ml (K+). To do this, add 0.3 ml of phosphate buffer solution (PBS) to the contents of the bottle with K+. The remaining amount of serum can be aliquoted and stored frozen at a temperature not exceeding minus 18 ° C for no more than 6 months.

      Preparation of Salmonella erythrocyte diagnosticum (SED)

      To prepare a working dilution of the Salmonella erythrocyte diagnosticum suspension, 0.6 ml of distilled water is added to the contents of the bottle with dry 6% SED and left to hydrate for 2 hours at a temperature of 16 to 25 °C. Then 2.4 ml of phosphate buffer solution (PBS) is added to the solution. The working solution is stored at a temperature of 2 to 8 °C for no more than 1 month. Freezing is not allowed.

      Statement of RPGA during screening of blood serums

      Blood sera for screening studies are diluted in the wells of the tablet as follows:

      • preliminary dilutions of 1:20 are prepared in the first wells of the plate, first adding 190 μl of RIP solution into them, then 10 μl of the test sera. Each serum is added with a separate tip and carefully pipetted (the color of the solution in the wells after adding the serums should change from blue-violet to green);
      • screening dilutions of 1:40 are prepared in the second wells by first adding 25 μl of PBS solution into them, and then 25 μl of pre-diluted sera and carefully pipetting.

      Each time RPGA is performed, it is necessary to carry out a control determination of the K+ titer. To do this, add 50 μl of PBS solution to 8 wells in a long row. Then add 50 μl of K+ working solution (1:20) to the first well, carefully pipet it and transfer 50 μl to the next wells, obtaining 2-fold dilutions from 1:40 to 1:5120. 50 μl of PBS solution is added to another 4 wells to monitor EDS for the absence of spontaneous hemagglutination.

      25 μl of SED is added to all wells of the plate with screening dilutions of the test sera (except for the first ones containing RIP) and controls. Stir the SED suspension in a bottle or bath before use! The tablet is thoroughly shaken and left at a temperature of 16 to 25 ° C for 30 - 40 minutes until the erythrocytes in the control completely settle.

      Statement of RPGA during titration of test blood sera

      Titration of the test sera and K+ working solution is carried out in short rows of the plate. Another short row is used to monitor the absence of spontaneous hemagglutination of EDS.

      180 μl of RIP solution is added to the first wells of short rows for titration of the test serum. Add 50 μl of PBS solution to all other wells.

      20 μl of test sera are added to the wells with the RIP solution (a dilution of 1:10 is obtained). Each serum is added with its own tip and carefully pipetted (the color of the solution in the wells should change from blue-violet to green). Then, 50 μl is transferred from the first wells to the next wells in the rows, obtaining twofold dilutions from 1:20 to 1:1280. At the end of the titration, solutions in a volume of 50 μl are removed from the last wells.

      Each time RPGA is performed, it is necessary to carry out a control determination of the K+ titer. To do this, add 50 μl of PBS solution to 8 wells in a long row. Then add 50 μl of K+ working solution (1:20) to the first well, carefully pipet it and transfer 50 μl to the next wells, obtaining 2-fold dilutions from 1:40 to 1:5120.

      To control the diagnosticum for the absence of spontaneous hemagglutination, 50 μl of PBS solution is added to all wells of a short row.

      25 μl of SED is added to all wells (except for the first wells of each row for test sera containing RIP). Stir the SED suspension in a bottle or bath before use! The tablet is thoroughly shaken and left at a temperature of 16 to 25 ° C for 30 - 40 minutes until the erythrocytes in the control completely settle.

      Accounting and interpretation of results

      Accounting for results when screening blood serum

      The results are taken into account on a conventional scale of four crosses. The serum titer is considered to be its dilution, which gives hemagglutination by at least 3 (+++) crosses.

      • ++++ (4+) - agglutinated erythrocytes form an inverted “umbrella” at the bottom of the hole, its edges fall off;
      • +++ (3+) - agglutinated erythrocytes form an inverted “umbrella” at the bottom of the hole, its edges are smooth;
      • ++ (2+) - along with agglutinated erythrocytes, at the bottom of the well there is a sediment in the form of a small “ring” of non-agglutinated erythrocytes;
      • + (1+) - most red blood cells are not agglutinated and settle in the form of a small “ring”;
      • (-) - non-agglutinated red blood cells form a “dot” at the bottom of the well.

      A positive result is considered to be hemagglutination of erythrocytes loaded with Vi-antigen by at least 3 crosses (+++).

      The quality control of the diagnosticum is provided by 4 wells of the control row, into which only PBS and SED solution were added. There should be no spontaneous hemagglutination in these wells - the reaction is negative (-). Otherwise, the study should be repeated. If hemagglutination appears upon re-staging, the drug is not used.

      Sera with a negative result should be considered not to contain antibodies to the Vi antigen with a diagnostic titer of 1:40 or lower.

      Sera that give a positive result at a dilution of 1:40 should be retested with titration of the serum to establish its titer.

      Accounting for results when titrating blood serum

      The serum titer is considered to be its dilution, which gives hemagglutination of at least 3 (+++) crosses.

      The quality control of the diagnosticum is provided by the wells of the row for controlling EDS. There should be no spontaneous hemagglutination in these wells - the reaction is negative (-). Otherwise, the study should be repeated. If hemagglutination appears upon re-staging, the drug is not used.

      The active principle of the diagnosticum is Vi-antigen, fixed on the surface of red blood cells. When interacting with sera containing antibodies to the Vi-antigen, the phenomenon of erythrocyte agglutination is observed.

      Release form

      Available in a set of 1 bottle with diagnosticum - 3 ml, diagnostic serum Salmonella adsorbed receptor Vi Dry in the form of a lyophilisate of 0.1 ml 1 bottle; 0.9% sodium chloride solution - 2 bottles of 8 ml; single-use tablet for immunological reactions - 1 pc.

      Compound

      Reagents Quantity:

      Diagnosticum erythrocyte Salmonella Vi-antigen, which is a 0.75% suspension of formalinized and sensitized human erythrocytes of blood group O (I) with Vi-antigen in a phosphate buffer solution (pH - 7.2 ± 0.2; concentration - 0.06 mol/l). Preservative - formaldehyde. Homogeneous suspension of brown color without flakes; upon settling, 2 layers are formed: a dense brown sediment of erythrocytes and a transparent yellowish supernatant liquid 1 bottle-3 ml.

      Salmonella diagnostic serum adsorbed B receptor dry - homogeneous mass from white with a brownish tint to beige. 1 bottle - from 0.1 ml.

      Maintenance solution - 0.9% sodium chloride solution - clear, colorless liquid, pH from 6.5 to 7.5. 2 bottles - 8 ml each.

      Round-bottom plate for single-use immunological reactions - consists of 8 rows, each of which includes 12 wells with a transparent, colorless, round bottom. 1 PC.

      The diagnosticum must be agglutinated in the RPHA by the diagnostic Salmonella serum adsorbed by the dry B receptor in a dilution of not less than 1/2 of their titer, but not less than 1/160. Diagnosticum should not be agglutinated by Salmonella diagnostic adsorbed dry sera for RA: O receptor 9 - in a dilution of 1:40 and higher, H receptor d - in a dilution of 1:10 and higher.

      Indications for use

      Designed to detect specific antibodies to Salmonella typhus Vi-antigen in human blood serum in a passive hemagglutination reaction (RPHA).

      Dosage regimen and method of administration

      Human blood serum samples are used as analyzed samples.
      The analyzed sample is stored under conditions that prevent bacterial growth at a temperature of 2 to 8 °C for no more than 72 hours. Freezing is allowed; frozen test samples should be thawed at room temperature before testing.
      Analysis of samples with severe hemolysis, bacterial growth, as well as those stored for a long time without freezing or re-frozen is not allowed.

      CONDUCTING THE ANALYSIS
      Preparation of solutions for RPHA.
      Dry open the vials with Salmonella diagnostic serum adsorbed by the B receptor and add 1 ml of the supplied 0.9% sodium chloride solution, thus obtaining a dilution of 1:10, which is a working dilution.
      An opened bottle with Salmonella diagnostic serum adsorbed dry at a dilution of 1:10 can be stored at a temperature of 2 to 8 °C for one month.
      Diagnosticum is ready for use. Before opening, the vial with diagnosticum must be shaken carefully until a homogeneous suspension is obtained. It is recommended to repeat shaking during operation.
      An opened bottle with diagnosticum in a closed form can be stored at a temperature of 2 to 8 ° C for one month.
      0.9% sodium chloride solution. Ready to use.

      Conducting RPGA.
      When monitoring any number of analyzed sera, it is mandatory to perform 1 series of agglutination with diagnostic Salmonella serum adsorbed by the B receptor dry.
      To perform RPHA, a single-use tablet for immunological reactions is used. Prepare two-fold serial dilutions of the analyzed sera in 0.05 ml of the supplied 0.9% sodium chloride solution starting from 1:10 to 1:2560 and 1 row of two-fold serial dilution of diagnostic Salmonella serum adsorbed B receptor dry, starting from a dilution of 1:10 , up to double the titer indicated on the label of the bottles of this serum.
      Add 0.025 ml of diagnosticum to each well with serum dilutions.

      Mandatory controls are:
      1. Control of diagnostic salmonella serum adsorbed by the receptor
      Vi dry and analyzed serum, which is added in a dilution of 1:10 in a volume of 0.05 ml
      into two control wells.
      2. Checking the absence of spontaneous agglutination of the diagnosticum, for which 0.025 ml of diagnosticum is added to two wells containing 0.05 ml of 0.9% sodium chloride solution.
      The tablet is shaken and placed for 1.5-2.0 hours in a thermostat at a temperature of (37+1) °C.

      ACCOUNTING OF RESULTS
      The reaction is taken into account using the four-cross system:
      4+ - all red blood cells are agglutinated and evenly cover the bottom of the well;
      3+ - almost all red blood cells are agglutinated. Against their background, there is an inconspicuous ring of settled, non-agglutinated erythrocytes;
      3+ - along with uniform agglutinate at the bottom of the well there is a sediment of non-agglutinated erythrocytes in the form of a small “ring” or “button”;
      1+ - the majority of red blood cells are non-agglutinated and settled in the form of a small “ring” with smooth edges or a “button” in the center of the bottom of the hole.
      (-) - there are no signs of agglutination. The red blood cells settled in the form of a small “ring” with smooth edges or a button in the center of the well or the bottom of the test tube.
      A reaction of at least 3+ is considered positive.
      The results obtained in the RPGA can be considered reliable if the diagnostic Salmonella serum adsorbed B receptor dry 1:10 obtained a positive result in a dilution of not less than 14 of their titers, and in 2 wells with the analyzed serum and with the diagnostic Salmonella serum adsorbed B receptor dry in dilutions of 1:10 there should be no flakes or sediment; in wells with 0.9% sodium chloride solution and diagnosticum - the reaction is negative.
      The antibody titer of the analyzed serum is considered to be the last dilution of the serum, which still gives positive agglutination of red blood cells.
      Interpretation of results.
      Persons who have antibodies to the B antigen at a dilution of 1:40 or higher are considered to be suspected of chronic typhoid bacteria carriage. However, due to the fact that the diagnosis cannot be made only on the basis of a serological study, an in-depth bacteriological examination is necessary.

      Precautions for use

      Included in the kit are diagnostic serum Salmonella adsorbed B receptor dry inactivated.
      Test sera must be inactivated at 56°C for 30 minutes.
      Test sera, as well as reagents, equipment and instruments in contact with them, may constitute potentially infectious material and should be handled with care:
      - work with rubber gloves;
      - when pipetting it is necessary to use automatic devices;
      - upon completion of work, treat the analyzed sera and reagents and instruments in contact with them with a disinfectant solution;
      - wipe equipment with 96% ethyl alcohol before and after use.

      Objective analysis results are guaranteed if the following conditions are met:
      - all kit reagents should be stored at a temperature of 2 to 8 °C;
      - do not use expired reagents;
      - do not use the kit reagents if there is no appropriate marking on their packaging;
      - to carry out RPGA, use reagents included only in this kit.

      2.diagnosticum

      4.from destroyed microbes (isolation of a specific Ag)

      Erythrocyte HBs diagnosticum

      2.diagnosticum

      4. suspension of air-sheep treated with tannin and precipitated a\g HBs

      5.to detect specific antibodies in blood serum

      Diagnosticum gp120

      2.diagnosticum

      4.separate a\g ex. HIV

      5. for detection of a\t HIV

      Tetanus erythrocyte diagnosticum

      2.diagnosticum

      4. suspension of er.ram, treated with tannin and a\g of tetanus

      5. to detect specific antibodies in blood serum (to tetanus

      Cardiolipin antigen for microprecipitation

      2.diagnosticum

      4.extracted lipid fractions from the heart of a healthy bull

      5.to detect specific antibodies in blood serum

      Ultrasonic treponemal antigen

      2.diagnosticum

      4. of killed exc. syphilis

      5.to detect specific antibodies in blood serum

      Corpuscular tularemia diagnosticum

      2.diagnosticum

      4.from individual pathogen particles

      5.to detect specific antibodies in blood serum

      Dysentery diagnosticum

      2.diagnosticum

      4. suspension from killed animals

      5.to detect specific antibodies in the patient’s blood serum

      Erythrocyte diagnosticum from Shigella Sonne

      2.diagnosticum

      4.suspension of er.ram, treated with tonin

      5.to detect specific antibodies in blood serum

      Diagnosticum from Salmonella typhimurium

      2.diagnosticum

      4. of killed exc. salmonella

      5.to detect specific antibodies in blood serum

      Serums

      Anti-gangrenous horse serum 5000 IU

      2.serum

      4.from the blood serum of hyperimmia horses with anatoxin of excitatory gas gangrene

      6. parenterally, after a test with globulin 1:100

      Normal human immunoglobulin

      2.serum

      4.from donor blood serum

      5. form-e pass. specific purchased arts imm

      6.parenteral

      Precipitating anthrax serum

      2.serum

      4. from the blood serum of hyperimmunized animals a\g exc.sib. ulcers

      6.precipitation reaction (RP)

      Botulinum serum type – A 400 IU

      2.serum

      5.to detect a specific antigen in the test material

      6.neutralization reaction (RN)

      Anti-anthrax globulin

      2.serum

      4.from the blood serum of hyperimmunized animals and/or exc. anthrax

      5. form-e pass. specific purchased arts imm

      6.parenteral

      Hemolytic serum

      2.serum

      4.from the serum of hyperimmunized animals with erythrocytes of animals of another type

      5.to detect a specific antigen in the test material

      Ogawa cholera agglutinating serum

      2.serum

      4.from blood serum of hyperimmunized animals

      5.to detect a specific antigen in the test material

      Luminescent tularemia serum

      2.serum

      4.from the blood serum of hyperimmunized animals a\g exc.tular.

      5.to detect a specific antigen in the test material

      Immunoglobulin against human tick-borne encephalitis

      2.serum

      4.from donor blood serum

      5. form-e pass. specific purchased arts imm

      6.parenteral

      ESNO diagnostic serum

      2.serum

      4.from the blood serum of animals hyperimmunized with ESNO viruses

      5.to detect a specific antigen in the test material

      Human immunoglobulin against hepatitis B

      2.serum

      4.from the blood serum of a donor vaccinated against hepatitis B

      5. form-e pass. specific purchased arts imm

      6.parenteral

      Peroxidase-labeled antiglobulin serum

      2.serum

      4.from blood serum of hyperimmunized animals

      5.to detect a specific antigen in the test material (HIV)

      Anti-rabies immunoglobulin

      2.serum

      4.from donor blood serum

      5. form-e pass. specific purchased arts imm

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