The operation method is as follows: first, put the cotton swab into your nostril, then rotate it in the deep part of the nasal cavity for about four to five times, with the retention time of 15 seconds, then put the test paper into the preservation solution and rotate it for at least 30 seconds, then drop the liquid under sampling management onto the test card, and wait for a certain time to see the COVID-19 test results. The accuracy rate can reach more than 95%. Since the five new names, the State Administration of Pharmaceutical Products has issued a notice to approve the changes in the testing applications of Nanjing COVID-19 antigen products, Shenzhen Huadaiyan, Guangzhou Wanfu Bio, Beijing Jin Fu and Beijing Huakaitai Bio. Antigen testing products have been officially listed. The accuracy of the antigen used by a friend is very good. COVID-19 only tested 100, so it is necessary to take out the nasal swab and test it in the nasal cavity.

Crown antigen brand-new self-inspection products, ensure the quality of samples, strict testing. Therefore, when using the instruction manual, we should read the sample carefully before sampling according to the above specifications and the flow rate during sampling. We must clean the nose with toilet paper first, and then take apart the nose swab. You need to be careful not to wipe your head with your hands, so as not to affect the test results. Then, your head leans back slightly during the test, and then one of them puts the tail tag on one side of your nose and slowly moves backwards along the bottom of your nose to 65438+. Repeat the same process, then take a nasal swab according to the instructions, and wait a while after reading the results.

The test results show that if C and R show red or purple stripes, and the stripe color can be dark or light, then this time it is a positive result. If c shows red or purple stripes, t shows stripes, but I don't know what color it is, and then it is a negative result, and c shows red or purple stripes, regardless of stripe width, then this situation is invalid.

Compared with DNA test, COVID-19 speed test can be faster, but it is also a more convenient process, but the accuracy of DNA test is relatively low, and it is usually used during the suspect's acute infection. In the population, the positive result antigen can be used for early transformation and rapid administration of suspected population, but it can not be used as the basis for diagnosis of COVID-19 infection.