A negative antigen test result, generally referred to as a new Crown pneumonia antigen test, does not necessarily mean that the virus is not present in the organism. The current indicator that the body has cleared the virus is multiple consecutive (at least 1 day apart) negative nucleic acid tests for C.neoformans.
Antigen testing is a way to detect the presence of the virus in the body. If the organism carries the virus, then the surface proteins of the virus react with the antibodies on the test paper to show a positive antigen test. However, the antigen test has some drawbacks, its sensitivity and specificity are lower than nucleic acid test. Very small amounts of viral proteins may be undetectable with a large margin of error.
Therefore, when the body antigen turns negative, it does not mean that the body has been cured, but still need to carry out the new crown pneumonia nucleic acid test to finalize, it is recommended to carry out the test in a timely manner, do not delay the disease.
[Tip] This article refers to the “new coronavirus pneumonia, new coronavirus pneumonia”, etc., has been December 26, 2022, the National Health Commission issued a notice to change the name to the “new coronavirus infection”.