There are two main methods to detect nucleic acid. Besides throat swab, nasal swab may also be detected. But because some people have bad breath and dirty noses. Then it may cause some trouble to the medical staff during the test. Doing a good job of personal hygiene and cleaning in advance is responsible for yourself and courtesy to medical staff.

Because there are many people when detecting nucleic acids, we should pay attention to prevention when detecting them. There are many people doing nucleic acid testing now, so it is also quite dangerous. You also need to do your own protection when testing. You can't take off your mask. Only when it's your turn to test, you need to take off your mask briefly. In addition, you need to wash your hands frequently, keep your distance from the people in line, and don't get close to each other.

It is best to wait for about 48 hours for nucleic acid detection after vaccination with COVID-19 vaccine. Otherwise, the results of nucleic acid test may be inaccurate. Try not to eat for the first two hours of nucleic acid preparation. Eating too much may cause vomiting during sampling. Don't drink water, drink or smoke half an hour before sampling.

Finally, when the person in front of the queue finishes the nucleic acid test, don't go forward immediately, let alone take off the mask immediately. And after the sampling, put on a mask immediately and don't cough at the inspectors. Leave immediately after the sampling is completed, and don't stay at the sampling site. Disinfect after going home, disinfect in all directions, and don't lie in bed immediately, so as not to bring bacteria to bed.

When conducting nucleic acid testing, we should actively cooperate with the staff and answer their questions in time. If you have been to high-risk areas in the past 14 days, you must report it in time and conduct nucleic acid testing every day. We should continue to do personal protection, wash our hands frequently and ventilate frequently. Don't involve others, but set high standards for yourself.

COVID-19-specific gene fragments in infected people can be found by nucleic acid detection. If it is positive, it means that the patient is infected. The most important function of large-scale nucleic acid detection is to screen asymptomatic infected people. When symptoms appear, everyone will be vigilant, treat and isolate themselves to reduce the risk of transmission. But when there are no symptoms, the awareness of protection may not be so high, which will bring greater risks to normal people. Therefore, nucleic acid detection can help us screen out infected people and isolate and block them as soon as possible.