After nucleic acid detection and sampling, it is handed over to the inspection department for corresponding virus nucleic acid detection. Nucleic acid detection is completed through five steps: sampling, sample retention, preservation, nucleic acid extraction and computer detection. Under normal circumstances, the nucleic acid test results will come out within 12-24 hours, which can be viewed through APP or WeChat health code. If the test result is negative, the prompt information will be displayed in green; If the test result is positive, the prompt message will be displayed in red.