Will you be notified immediately if the nucleic acid test is positive? Will the nucleic acid test be negative?

1 Will the nucleic acid test be notified immediately? Yes

If COVID-19's nucleic acid test is positive, the medical institution or the third-party testing institution will inform me as soon as possible, because the results of nucleic acid test show that the tested person is infected with COVID-19 virus and needs to be isolated and observed immediately, and will also ask about his recent life track and conduct nucleic acid test on his close contacts.

If the nucleic acid test result is positive, but the patient is not informed at the first time, it may lead to the patient's going out for activities, which will lead to the widespread spread of COVID-19.

Is it necessary to be okay if the nucleic acid test is negative? Not necessarily.

Nucleic acid detection can detect whether COVID-19 exists in human body. If the nucleic acid test result is positive, it means that COVID-19 may exist in human body. But if the nucleic acid test result is negative, it is not necessarily infected. Various factors need to be considered comprehensively, because the result of a nucleic acid test can not completely rule out the possibility of virus infection, which may be due to irregular sample collection, insufficient virus quantity, and problems with the kit. This leads to false negative results of nucleic acid detection.

It is suggested that it is best to do more nucleic acid testing after 24 hours for further diagnosis. If multiple nucleic acid tests are negative, the possibility of infection can be ruled out. If necessary, you can do other physical examinations and make comprehensive judgments.

3 The first positive and second negative of nucleic acid detection may be caused by the following reasons:

Immature detection technology Up to now, there are many mutant viruses in COVID-19, and the previous nucleic acid detection technology may make the sensitivity of mutant viruses in COVID-19 poor, leading to the immature detection technology used by candidates, thus leading to false positives.

COVID-19 nucleic acid detection of virus-free samples is mainly to collect samples through nose swab or throat swab, but the collection of nose swab and throat swab needs to be wiped back and forth at the designated site twice. If someone does not operate properly, the result of nucleic acid test may be positive for the first time and negative for the second time.

The virus in the patient's body will change due to the treatment effect, and may still exist in the patient's body during the treatment, but it will drop to a level that cannot be detected by various technologies.

How long is the interval between the first and second nucleic acid tests? More than 24 hours.

Generally speaking, the interval between the second COVID-19 nucleic acid test and the first nucleic acid test is at least 24 hours, because the results of the first nucleic acid test may lead to false negative results due to sampling, especially in Haller, who has a history of epidemiology. It is suggested that the second nucleic acid test should be done after the first nucleic acid test result is negative, which can rule out the possibility of infection.