HIV-AB refers only to the antibody of HIV, not the method of detection. The main method used to detect HIV antibodies is ELISA, of course there are some other methods, such as chemiluminescence, WesternBlot, etc. ELISA is the most common one and is also more accurate. Through the HIV antibody test, HIV antibody can be detected in the infected person’s body in about 3-4 weeks, and it is clear that the infected person is infected with HIV, and once the infection is diagnosed, the immune status of the patient’s body as well as the viral load should be clarified, and antiviral drugs should be used to treat the infection. Currently, antiviral treatment for HIV is free of charge, and by taking antiviral drugs, patients can achieve long-term survival and reduce their viral load and infectiousness, thus minimizing their complications.