Check syphilis AIDS mainly for syphilis antibody test and AIDS antigen antibody test. 1. Syphilis test: about 4 weeks after high-risk behavior, you can do syphilis spirochete antibody test, extract the patient’s blood, analyze whether there is syphilis antibody in the blood, there are generally two tests for syphilis-specific antibody and syphilis non-specific antibody, and the result of the positive means abnormal, negative is normal. 2. HIV test: about 2-6 weeks after high-risk behavior, blood or saliva can be extracted to analyze whether there is HIV antibody in it; at present, there is also a more advanced HIV antigen test, which extracts blood and analyzes whether there is HIV antigen in the blood through PCR technology, and the antigen test can be advanced to about 2 weeks after high-risk behavior. People who suspect that they are infected with sexually transmitted diseases need to review the test indicators several times in regular hospitals, standardized follow-up, and should not listen to small clinics and other false information on the Internet, so as to avoid delays in their condition.