AIDS can be detected in the patient’s body about 2-3 weeks after high-risk behavior, which means that the window period for the four-generation test is about 2-3 weeks. Therefore, after having risky behaviors, go to the hospital after 2-3 weeks to check the antigenic antibodies of HIV, so as to clarify whether you are infected with HIV initially. If you want to check for HIV more quickly, you can also consider checking the viral load of HIV nucleic acid (HIV-RNA), which can be detected in the infected person’s body as soon as 7-10 days after infection, thus confirming that the person is infected with HIV. The final diagnosis is made through a CDC confirmatory test that uses a protein blot to detect antibodies to HIV, and a positive test confirms the diagnosis of infection.