The substance of nucleic acid detection is the nucleic acid of virus. Nucleic acid detection is to determine whether the patient is infected by COVID-19 by detecting whether there is nucleic acid of foreign invasive virus in respiratory tract samples, blood or feces. Therefore, once the nucleic acid is "positive", it can prove that there is a virus in the patient.

Nucleic acid detection needs to pay attention to the following points:

1. First, bring personal valid documents;

2. Pay attention to smoking, drinking and chewing gum. 30 minutes before sampling;

3. Testers need to wear masks correctly during testing, take them off before testing and put them on immediately after testing;

4. When waiting for the test, please pay attention to wearing a mask all the time;

5. Keep a distance of more than 1 m from others, do not talk or gather, obey the instructions of the on-site staff, and complete the work processes such as code scanning, registration and sampling in an orderly manner;

6. If nasopharyngeal swab is collected, there may be a small amount of nosebleed, which generally does not require special treatment. If there is a lot of bleeding, please go to the hospital for treatment in time;

7. If the COVID-19 vaccine is inoculated on the same day, the nucleic acid test can only be carried out after 24 hours.

legal ground

Law of People's Republic of China (PRC) on the Prevention and Control of Infectious Diseases

Article 41 The local people's governments at or above the county level may take isolation measures against the persons in the places where cases of Class A infectious diseases occur or in specific areas within the places, and report to the people's governments at the next higher level at the same time; The people's government at a higher level that receives the report shall immediately make a decision on approval or disapproval. If the people's government at a higher level makes a decision not to approve, the people's government that implements the isolation measures shall immediately lift the isolation measures.

During the period of isolation, the people's government that implements isolation measures shall provide living security for the isolated personnel; If the isolated person has a work unit, his work unit will not stop paying his remuneration during the isolation period.

The lifting of isolation measures shall be decided by the original decision-making organ and announced.