Description
Rapid Antibody Test Kit
Detect the presence of anti-SARS-CoV-2 IgG in human fingertips. Used to help identify blood individuals with an intimate response to SARS-CoV-2, indicating recent or previous infections.
Rapid Antibody Test Kit compose
About Antibody
After the virus invades the human body, the human body will produce corresponding specific antibodies for defense.
According to different molecular structures and antigen specificity, scientists divide immunoglobulins into five categories: IgG, IgA, IgM, IgD and IgE.
After the antigen enters the human body for the first time, plasma cells secrete antibodies after a certain incubation period. IgM first appeared, but the antibody had short maintenance time, low concentration and low affinity. It lasted for several days to several weeks in the blood. It was a diagnostic index of acute infection; When IgM is about to disappear, the content of IgG reaches the peak. IgG appeared late, but its concentration was high, its maintenance time was long and its affinity was high. The positive serum IgG indicates the middle and late stage of infection or previous infection. But the antibody content increases rapidly in the short term, which may be several times to dozens of times higher than the original antibody content. It is mainly IgG, which lasts a long time in the body, and IgM rarely increases.
The antibody detection of the COVID-19 is different from the nucleic acid detection. The nucleic acid of the virus can be found by taking some human secretions. The antibodies of the COVID-19 can only be detected by blood sampling, because the blood contains antibodies, so the accuracy is the highest.
Rapid Antibody Test Kit sampling process
The test results
Why is double antibody?
General antibody is to check two kinds of antibodies, one is IgM and the other is IgG. IgM antibody appears in the early stage of the disease, that is, the acute stage. The highest peak may appear in about three weeks, and then the concentration decreases gradually. IgG is replaced later. IgG antibody is a permanent antibody. When patients gain immunity to a disease, they actually have specific IgG antibodies against the disease. They only need to take blood test.
Difference between nucleic acid detection and antibody detection.
COVID-19 serum IgG/IgM antibody detection (short for antibody detection) is an important means of rapid screening and nucleic acid assisted diagnosis. The joint detection of nucleic acid and antibody can improve the diagnostic efficiency. COVID-19 nucleic acid detection (nucleic acid detection) is currently mainly through nasopharyngeal swabs sampling, detection of lower respiratory tract specimens (sputum or airway extraction) more accurate, specimen collection after the need to send for inspection as soon as possible, nucleic acid detection time is relatively longer. Serum specific antibodies are another key evidence for the diagnosis of infection. There are no harsh conditions for serum detection and sampling, and the result time is faster. In patients infected with COVID-19 , whether the virus is present in the respiratory tract, it is theoretically possible to detect the presence of specific antibodies in the blood. Blood sampling also avoids the risk of infection among medical staff.
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