Is it accurate to be negative for syphilis 13 days after high-risk behavior?

Syphilis negative after 13 days of high-risk behavior is not accurate.
Syphilis has a certain window period, about one month, some patients about 2~4 weeks, in the window period of the examination, can not completely exclude the possibility of syphilis, because in this period, the body may not have antibody production, so the examination can not be, so after 13 days of high-risk behavior, syphilis negative is inaccurate, and can not completely rule out the possibility of infection of syphilis.
Negative syphilis after 13 days of high-risk behavior, it is recommended to wait until 1 month to check again, most people syphilis window period is not more than 1 month, if the test results are also negative, suggesting that no syphilis infection, it is recommended that 6 weeks, 8 weeks and then recheck.
If you have high-risk behaviors, it is recommended that you follow your doctor’s instructions and take the test at intervals to determine whether you are infected with syphilis.