Generally one bar of Neo-Crown Antigen will not be positive, but the possibility exists that it could be positive if it is not tested properly. Neo-crown antigen refers to the Neo-crown antigen test, which is primarily a direct test for the virus, and is a form of Neo-crown virus testing. Generally, one bar of the Neo-Crown Antigen test will not be positive, mainly because the specificity of this test is about 95% to 99%, and the accuracy is relatively high. However, if the test is performed improperly, such as insufficient sampling volume or incorrect procedure, there is still a possibility that the test may be positive. One bar may be a negative or invalid result, while two bars will be displayed if the test result is positive. To summarize, if you have doubts about the results of the new crown antigen test, you can go to the hospital in time to further improve the nucleic acid test and make a clear diagnosis, so as to avoid delaying the treatment and causing adverse effects.