The SARS-CoV-2 Antigen Rapid Detection Kit(Colloidal gold method) is based on the principle of immunochromatographic sandwich method, which is used for the qualitative detection of human oral saliva specimens during the acute infection period of new coronavirus SARS-CoV-2 antigen.
After adding the extracted specimen into the test cartridges,the specimen will move along the nitrocellulose membrane to the end of the absorbent paper by capillary action. When the SARS-CoV-2 antigen level in the specimen reaches or exceeds the target threshold, the line T(Test Region) will be colored (pre-embedded with SARS-CoV-2 N protein monoclonal antibody),which indicates a positive result. another visible colored band may appear at the line C (Control Region), indicating that the test has been performed correctly. When the SARS-CoV-2 antigen level in the specimen is zero or below the target threshold, the T line is not colored ,this indicates a negative result.