HIV testing consists of two ways, the general routine self-testing HIV test strips at home. First, the patient washes his hands and then disinfects 1 fingertip. Secondly, a blood collection needle with test strips is used and the skin is pricked. This process is somewhat similar to measuring blood glucose. Put a drop of blood into the round hole below the kit and then add the buffer inside the kit, drop by drop, about 2-3 drops. In the observation area, see the liquid surface spreading and the control line appearing soon, and judge according to the instructions. If positive is AIDS, negative is healthy. If none of the lines are present, it suggests that this test is invalid and this is only the initial screening. If patients want to be more sure whether they have AIDS, they need to go to the CDC for free HIV antibody testing, which is more accurate. But it also has a window period, which is usually 2-3 weeks.