According to CCTV.com, on March 12, the State Food and Drug Administration issued a notice to approve the self-testing application of new crown antigen products of Nanjing Novizan, Beijing Jinwofu, Shenzhen Huada Yinyuan, Guangzhou Wanfu Bio, and Beijing Huaketai Bio. Apply for a change.
Since then, five new coronavirus antigen self-test products have been officially launched.
It is reported that the new crown antigen self-test product can be very convenient for self-sampling and testing, and those over the age of 14 can perform nasal swab sampling by themselves.
The self-tester first blows his nose with toilet paper. Carefully unpack the nasal swab to avoid touching the swab tip with your hands. Then tilt the head slightly, hold the swab in one hand and stick the tail of the swab into one nostril and enter it slowly along the bottom of the lower nasal passage to go back 1-1.5 cm, then stick to the nasal cavity and rotate for at least 4 circles (the residence time is not less than 15 seconds), and then Repeat the same procedure for the other nasal cavity using the same swab.
After the sampling is completed, place the nasal swab after collecting the sample in the sampling tube immediately. The swab head should be rotated and mixed in the preservation solution for at least 30 seconds. , to ensure that the sample is sufficiently eluted in the sampling tube.
Only after the liquid of the swab head is squeezed dry by hand through the outer wall of the sampling tube, the swab is discarded. After capping the sampling tube, drop the liquid vertically into the sample hole of the test card.
According to the reagent instructions, the results can be interpreted after a certain period of time.
However, it should be noted that the comprehensive team of the State Council’s joint prevention and control mechanism for the new coronavirus pneumonia epidemic decided to add antigen testing as a supplement on the basis of nucleic acid testing. Nucleic acid testing is still the basis for the diagnosis of new coronavirus infection.
Antigen detection is generally used in the acute infection period, that is, the detection of samples within 7 days of the onset of symptoms in the suspected population. Both positive and negative antigen results of suspected populations should undergo further nucleic acid testing. Positive results can be used for early triage and rapid management of suspected populations, but cannot be used as the basis for the diagnosis of new coronavirus infection.