Is COVID-19 nucleic acid antibody detection accurate?

Up to now, more and more people are in danger of being infected after the country has adopted an open policy towards COVID-19. In order to better ensure their own safety, most people will buy some emergency drugs on the one hand, and choose to buy antigens on the other hand, so that they have the conditions for self-test. Therefore, the accuracy of antigen results often becomes a key topic of public concern, so many netizens question: If the antigen test shows negative, does it mean that COVID-19 is not infected?

I believe this problem is also a topic of concern to many people, so if the antigen test is negative, it does not mean that there is no virus infection. There are often two reasons, one is not infected by novel coronavirus, and the other is that it may be infected, but the result is false negative. Therefore, antigen detection can not be used as a diagnostic method of novel coronavirus infection, and it needs to be combined with nucleic acid detection to better ensure the accuracy of the results. So for most families, it just helps us to have a more accurate understanding of the results when symptoms appear.

Moreover, there are many uncertainties in antigen detection, which are easily disturbed by the outside world. Therefore, if asymptomatic infection occurs, it is possible that the virus will not replicate in the body and be excreted, thus failing to reach the sensitivity of antigen detection and the result is negative. Therefore, even if some people are infected and even have some mild symptoms, the antigen test is negative. Usually in this case, the viral load is low and the infectivity is relatively weak. Therefore, antigen testing does not need to be done more than once a day, so I hope everyone can have an objective understanding of the results of antigen testing, and don't take it as the exact and only standard of infection, which will easily lead to the uncertainty of the results and lead to the wrong results.