The normal range for an HIV antibody test is between 0 and 1. Anything within this range is negative, and anything above 1 is positive. There is another test that is qualitative and the results are positive and negative. If it is negative, it means no infection, if it is positive, it is considered to be infected with HIV. Of course, if both of these methods are positive, further confirmatory testing is recommended. If the confirmatory test is also positive, then the HIV infection is further clarified. If the confirmatory test is negative and the primary screen is positive, then a false positive may be considered. Of course, for high-risk groups, it is necessary to pay attention to the exclusion of the window period, after the window period, the test is still negative can be excluded.