covid-19 rapid saliva antigen test 

The test principle is antigen detect. The new coronavirus antigen detection is detected on a test strip through the binding reaction of antigen and antibody, which is convenient and quick, and the result is usually available in 15-20 minutes. Clinically, to determine whether the virus has invaded the human body, three main methods can be used: nucleic acid detection, antigen detection and antibody detection. Both nucleic acid detection and antigen detection can directly detect the virus. Antigen detection mainly detects the antigen of the virus, nucleic acid detection mainly detects the gene of the virus, and the antigen is the shell of the virus, which can be detected more easily. Compared with nucleic acid detection, antigen detection is faster and more convenient to operate, but at the same time, the accuracy will be lower. Therefore, antigen detection can be applied to the early screening of new coronavirus infection, which can help to detect infected persons as soon as pos…

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