Li, director of the Office of National Health Commission Clinical Laboratory Center, said that the main feature of antigen detection is fast and simple. By adding antigen screening to relevant key populations, most people can detect corresponding results according to antigen detection, and then quickly control the spread of COVID-19 epidemic.
Li introduced in detail that there are three types of key people in the application of antigen testing: one is those who go to primary medical units for medical treatment. If there are people with clinical manifestations and fever, it is clear that this performance is within 5 days. If the nucleic acid test is negative, you can continue to test the antigen at home for 5 days. The second kind of personnel are protection observers, including home protection observers. In the case of antigen detection, continuous detection for 5 days, detection 1 time every day. If it is positive, it is likely to be tested. If it is negative, no intervention is needed until the last nucleic acid test result comes out. The third group is the staff in the family who are looking forward to their own testing. If it is positive, do a nucleic acid test as soon as possible. If it is negative, you can do another antigen test at home if necessary.
Talking about the difference between antigen detection and nucleic acid detection, it is emphasized that they are not specific. "The specificity of antigen detection can reach 99%, but the non-specificity of nucleic acid detection is 100% in methodology. In other words, if there is no false positive in methodology, what you do is true. Therefore, nucleic acid detection has always been the' gold standard' for people to clarify COVID-19's feelings. "
Li stressed that antigen testing cannot replace nucleic acid testing. When the antigen test is positive, we must conduct a nucleic acid test to determine. However, when the nucleic acid test is positive, no matter whether the antigen test is negative or positive, the subject, as a COVID-19 infected person or a diagnosis patient, needs to take some effective measures.
An antigen detection method is added to facilitate independent detection by residents. Jiao Yahui, director of the Medical Administration and Hospital Authority of the National Health and Family Planning Commission, said that if residents have the necessity of antigen testing, on the one hand, they can go to primary medical institutions for antigen testing in principle; You can also purchase antigen testing laboratory reagents independently according to retail pharmacies or the Internet.
What if residents do antigen testing at home and the results are positive? For this matter, Jiao Yahui said that if it is positive, it should be reported to the community in the jurisdiction, and the community will inform the first aid station to call the special rescue vehicle 120 to transport the patients with positive antigen test to the designated medical institutions with nucleic acid detection standards under closed-loop control, and then carry out nucleic acid detection. If the nucleic acid test is positive, it will be added to the steps of the management measures for virus-infected people.
She also reminded that once the family antigen test is positive, all used cotton swabs, test-tube babies and test cards must be packed in sealed bags. When the staff comes to the door for service, they must take the sealed bag to the designated medical institution and dispose of it as medical waste.