Antigen rapid test kit

Specific applications of antigen rapid test kits:
Antigen rapid test kit is mainly used to detect the presence of specific antigen in human samples (such as nasopharyngeal swabs, oropharyngeal swabs, etc.), so as to assist in determining whether an individual is infected with a certain pathogen.
Product composition of antigen rapid test kit: generally include the following parts:
Test card or strip: contains the test reagent and reaction area.
Sample collection kit: e.g. nasopharyngeal swab or oropharyngeal swab.
Extraction buffer or lysate: used to process the sample and release the antigen.
Instructions: detailing the test and precautions

Antigen rapid test kit detection principle:

Antigen rapid test kits usually use immunochromatography or latex agglutination method to detect antigens.

Immunochromatography:

During the detection process, the sample (such as the secretion collected by nasopharyngeal swab or oropharyngeal swab) is added to the sample well of the detection card. The sample moves forward along the membrane on the detection card under capillary action. If there is a specific antigen in the sample, it will specifically bind to the antibody fixed on the detection membrane. Subsequently, the antibody complex combined with the antigen will continue to move and combine with another antibody marked with a color-developing substance (such as colloidal gold). When the color-developing substance reaches the detection line, a visible line will appear, indicating the presence of the antigen.

Latex agglutination method:

The antigen in the sample specifically binds to the antibody coated on the surface of the latex particles. When the antigen binds to the antibody, it will cause the latex particles to aggregate with each other, forming a visible agglutination phenomenon. By observing the degree of agglutination, it can be judged whether the antigen exists or not.

These detection principles utilize the highly specific interaction between antigens and antibodies, and can quickly provide detection results in a relatively short time, helping people initially judge whether they are infected with relevant pathogens. However, it should be noted that antigen detection may have certain false positive or false negative results, and its accuracy may be affected by a variety of factors.

The Antigen Rapid Test Kit is mainly applicable to the following areas:
Initial screening of suspected infected populations: it can be used for people with relevant symptoms or at risk of exposure to quickly determine whether they are infected.
Detection in specific places: such as medical institutions, schools, nursing homes, etc., for regular testing or outbreak monitoring.
Pre-travel testing: to meet the requirements of some travel destinations.
Rapid testing for large populations: used when rapid screening is required.