Syphilis can be ruled out after 3 months of negative syphilis antibodies and high risk; syphilis is a sexually transmitted disease caused by infection with the syphilis spirochete, mainly through sexual transmission, blood transmission, and mother-to-child transmission. After the infection of syphilis spirochete, usually also in the infection of 2~4 weeks serum produce syphilis spirochete antibody, then serum antibody test can be detected positive syphilis spirochete antibody.
However, due to individual differences, the time of antibody emergence varies in each person. To be on the safe side and to more accurately diagnose whether you have been infected with syphilis, it is recommended that you take a syphilis spirochete test 3 months after you have been at high risk, and if the antibody is positive, you can diagnose syphilis.
If the syphilis antibody test result is negative after 4 weeks of high risk, the possibility of syphilis infection can basically be ruled out. If you are not sure, you can also be tested again after 3 months, and if the results of the two tests are the same, syphilis infection can be ruled out; long-lasting penicillin is usually injected intramuscularly after infection with syphilis, and syphilis serologic tests are done regularly, and regular follow-up is needed for about 2~3 years after treatment.
If you have any questions about syphilis test results, you can consult your doctor.