HIV is positive for viral antibodies. At present, the main test for AIDS is to check for HIV antibodies, which are divided into positive and negative cases. If the HIV antibody is negative, it means that you are not infected with HIV, but you need to pay attention to exclude the window period. If the HIV antibody is positive, it indicates the possibility of HIV infection, and further confirmatory tests are needed, and if the confirmatory test is also positive, the diagnosis is clear. If the confirmatory test is negative, a positive initial screening test may be a false positive, and there is no infection in this case.