Nucleic acid test abnormalities are abnormal results of the nucleic acid test being tested, with results other than negative or positive. Nucleic acid test results are generally categorized into negative and positive, if there are problems with the tested nucleic acid test samples or problems with the experimental process, it may lead to abnormal nucleic acid test results, which are commonly known as false-negative, false-positive, etc. Invalid samples may lead to false-negative, and positive vaccinations and environments may lead to false-positive results. Therefore, after the occurrence of abnormal nucleic acid test results, it is necessary to carry out sampling and re-testing again to clarify which situation the test subject belongs to, and take appropriate measures according to the final re-testing results, with the active cooperation of the test subject.