There may be cases of neocoronary antigen-negative nucleic acid positivity, with no exact numerical information on the probability.
There may be some limitations to the antigenic testing for neocoronavirus, which may result in false-negative test results due to incorrect testing methods, inadequate sampling, and damaged test strips. In contrast, the relatively high accuracy of neocoronavirus nucleic acid testing results in antigen-negative nucleic acid positivity, but the probability of this has not been documented.
Therefore, when using the new crown antigen test paper yourself, you should first wash your hands, carefully read the instructions, understand the testing process, and at the same time, check the antigen test paper and test tubes, sampling tubes, etc. for defects before checking, and do the test in sufficient time and reasonable sampling location. All these situations may lead to differences in test results.
For new coronavirus testing, it is recommended to proactively go to the relevant community units for nucleic acid testing or repeated self-antigen testing to detect whether one is infected with the virus.
In addition, if symptoms such as dry cough, fatigue, sore throat, etc. occur, it is necessary to go to the hospital in a timely manner to rule out the new coronavirus infection or upper respiratory tract infection before active treatment.