The State Council's joint prevention and control mechanism held a press conference on March 20 in order to restore normal medical order. Feng Luzhao, a researcher at the Chinese Center for Disease Control and Prevention, said that currently the State Drug Administration has approved 12 nucleic acid detection reagents and 8 antibody detection reagents, and more detection reagents and methods will be put into use in the future.
Feng Luzhao introduced that the average detection time of nucleic acid detection takes 2-3 hours, which is the current main detection method. Antibody detection is divided into colloidal gold method and magnetic particle chemiluminescence method. Among them, the colloidal gold method can give the test result in 15 minutes, which is "a drop of blood can be detected by naked eye in 15 minutes" reported by the media. The magnetic particle chemiluminescence method generally takes 30-60 minutes.
Feng Luzhao emphasized that the antibody test is to detect the level of antibodies in the human blood. In the early stage of the infection of the disease, antibodies may not be produced in the human body, so it has a window of detection. Therefore, antibody detection can be used to assist in the diagnosis of cases with negative nucleic acid tests, and to screen and screen cases, but it is not a substitute for nucleic acid detection methods.
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