Reviewing the nucleic acid test may mean that the infection could not be completely ruled out at one time, that there was an error in the last test, or, in the case of a mixed test, that there was a positive case.
1. Because of the long incubation period of the novel coronavirus, which may be up to two weeks, one test cannot completely rule out infection, and a retest of the nucleic acid test is needed to rule out false negatives.
2. If, during the last nucleic acid test, sampling was incomplete, resulting in unsuccessful collection, or if there was an error in the entry of information, a review of the nucleic acid test will be required.
3. If a mixed nucleic acid test is performed, i.e. nucleic acid samples from multiple individuals are in a single test tube, and if a positive infected person is found, then multiple individuals will need to be retested to identify the positive patient. This is mostly a door-to-door test by the retester.
It is recommended to take personal precautions, wear a mask and follow the community requirements for retesting.