Neocoronavirus nucleic acid and antibody tests are two types of tests, as follows: 1. New coronavirus nucleic acid test is an “on-going” test, only through the nucleic acid test is positive to confirm the diagnosis of new coronavirus infection. Currently, nucleic acid testing is the usual screening method for neocoronavirus infection throughout China. To perform the nucleic acid test, a throat swab or nasal swab is collected, and the sample is sent to a specialized laboratory for viral nucleic acid extraction, followed by the addition of a variety of reagents and amplification using a PCR instrument, and based on the results of the amplification to determine the population’s infection at this time. A negative result means that no new coronavirus has been detected, but a negative result does not necessarily mean that the virus is “absent”. It is possible that the virus is undetectable because of the low level of the virus, and multiple tests will be required if necessary. Positive results are usually indicative of infection with the new coronavirus. 2. Antibody test is a “past tense” test, which is an aid in the diagnosis of C.neoformans. Antibody testing for C.N.C.V. requires a blood draw, which is usually done with specialized reagents. It mainly detects IgM or IgG specific antibodies in the patient’s body, with IgM being a marker of recent infection and IgG being a marker of previous infection. By testing suspected cases for IgM and IgG, it is possible not only to identify whether or not an infection is present, but also to determine whether the patient has a recent or previous infection. The combination of new coronavirus nucleic acid test and antibody test can better identify the infection of the person at this time. [Tip] In this article, “new coronavirus pneumonia” and “new coronavirus pneumonia” have been renamed to “new coronavirus infection” on December 26, 2022, as announced by the National Health Commission.