It is more accurate to test for AIDS after the window period, and patients are advised to go to a regular hospital for testing. Window period refers to the time from HIV infection to the time when the serum-specific antibody test is positive. Generally, after the window period of AIDS, if the antibody test is positive, it means that it is infected with human immunodeficiency virus, and if the result of the retest is still positive, it can be diagnosed as AIDS. After the human body is infected with the human immunodeficiency virus, it usually takes a period of time for the blood to produce antibodies, which is called the window period, during which the antibody test is negative. Therefore, it is recommended that AIDS patients go to a regular hospital for examination after the window period to confirm or rule out the infection. If HIV infection is suspected, it is recommended to go to regular hospitals for timely examination; if HIV is detected after the window period, it is recommended to follow the doctor’s instructions for further examination and treatment.