The production process of fibrinogen assay kit

The production process of the fibrinogen assay kit involves multiple key steps. Taking the immunoturbidimetric method and double antibody sandwich method (ELISA) as examples, the core production process is introduced as follows:

1. Production process of the immunoturbidimetric assay kit

Reagent composition design:

Buffer system: pH 7.8 phosphate buffer solution is used to provide a stable reaction environment.

Antibody: Add sheep anti human fibrinogen antibody, which specifically binds to fibrinogen in the sample.

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Stabilizer: EDTA-Na2 is added as a stabilizer to enhance the stability of the reagent without affecting the detection accuracy.

. Other ingredients: including polyethylene glycol 6000, latex particles, sodium chloride, sodium azide, etc., used to improve the physical properties of the reagent and extend its shelf life.

Reagent preparation:

Dissolve each component in the buffer system according to the formula ratio, stir thoroughly and mix well.

. Adjust the pH value to the set range to ensure the stability of the reagent. Filter and sterilize, pack into reagent bottles, and seal for storage.

Kit assembly:

Assemble the prepared reagents together with the enzyme-linked immunosorbent assay (ELISA) coated plate, standard, sample diluent, washing solution, color developer, stop buffer, and other components to form a kit.

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Please find attached the instruction manual, which provides detailed operating steps and precautions.

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II. Double antibody sandwich method (ELISA) kit production process

Antibody coating:

Select high-purity fibrinogen antibody and dilute it with coating buffer to an appropriate concentration.

. Add the diluted antibody to the enzyme-linked immunosorbent assay (ELISA) coated plate, with a certain amount added to each well to ensure that the antibody evenly covers the bottom of the well. Incubate at 37 ℃ for a certain period of time to firmly bind the antibody to the bottom of the well. Wash to remove unbound antibodies and pat dry for later use.

Reagent preparation:

Enzyme labeled reagent: Dilute the HRP labeled fibrinogen antibody with enzyme labeled buffer to an appropriate concentration.

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Standard: Dilute the fibrinogen standard with sample diluent to different concentrations as the standard curve for quantitative determination.

. Washing solution: Prepare a washing solution of appropriate concentration for washing enzyme labeled coated plates.

Color reagent: Prepare TMB color reagent for color reaction with substrate generated by HRP catalysis.

. Termination solution: Prepare termination solution to terminate the color reaction.

Kit assembly:

Assemble the packaged enzyme-linked immunosorbent assay (ELISA) plate, ELISA reagent, standard, sample diluent, washing solution, color reagent, stop solution, and other components together to form the kit.

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Please find attached the instruction manual, which provides detailed operating procedures, methods for creating standard curves, and criteria for determining results.

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