Syphilis negative for three weeks. Completely ruled out.

After infection with Treponema pallidum, the immune system in the body will produce a lot of antibodies against Treponema pallidum. After detecting these antibodies, it can be inferred whether the patient is infected with syphilis. However, the production of Treponema pallidum antibodies takes a certain time, normally 4 to 6 weeks. If the detection time is too short, the Treponema pallidum antibodies in the blood may not be produced in time, or although they are produced, they still do not reach the detection concentration and cannot be detected. Three weeks or so detection, the time is relatively short, negative and can not completely rule out syphilis. It is recommended that 2 to 3 weeks after repeated examination, if still negative, you can rule out.