Antigen positivity generally refers to positive neocoronavirus antigen, and nucleic acids are likely to be positive when neocoronavirus antigen is positive. When doing the antigen test, you need to use a swab in the nasal cavity after sampling, the swab in the preservation of liquid mixed well, and then drop into the kit to do the test. During the whole testing process, the sampling process should be operated in a standardized way, the sample volume should be sufficient, the sample extraction should be qualified, and the waiting time for the result is 10~15 minutes, which may result in false-positive, false-negative, or invalid results if the above rules are not observed. The New Coronavirus Antigen Detection Kit is designed to capture a specific antigen by a specific antibody, this process also requires the proper pH (acidity), if the appropriate pH is destroyed, resulting in a non-specific result of the antigen-antibody, false positives may also result. Due to differences in detection principles, antigen testing is less specific than nucleic acid testing, and antigen testing, even if positive, requires further confirmation by nucleic acid testing. Therefore, a positive antigen test is not necessarily a new coronavirus, and further nucleic acid testing is needed to confirm the diagnosis.