The window period does not detect HIV infection. The window period is the period between the time of infection and the time when AIDS can be detected. Therefore, if you want to test for HIV infection, you should do so after the window period. Most hospitals in China test for HIV antibodies to determine if you are infected with HIV. The presence of antibodies to AIDS can be detected in the patient’s body about 2-12 weeks after infection with AIDS. Therefore, after a high-risk behavior, it is recommended to go to the hospital after 4 weeks for an HIV antibody test, the results of which are relatively accurate and can clarify whether the patient is infected with AIDS. In addition, testing for HIVRNA and P24 antigen can also help in the diagnosis of HIV/AIDS, especially in shortening the window period of antibodies and helping in early diagnosis.