COVID-19 nucleic acid detection reference value?

Using nucleic acid to detect novel coronavirus, the results can be divided into three situations, namely, positive, weakly positive and negative. Only when the test result is negative, it belongs to a completely healthy state. Positive and weak positive indicate that novel coronavirus may be infected in the body.

Due to the influence of external environment and many factors, a single nucleic acid test can't completely judge whether it is infected with novel coronavirus, and it needs to wait for 24 hours before re-examination. In some cases, even three or more tests are needed, and a diagnosis can only be made when all the test results are positive.