How long does it take to get a syphilis blood test?

Syphilis is a sexually transmitted disease caused by Treponema pallidum infection. Because syphilis infection in the early stage will show hard chancre, the pathogen has not yet entered the blood, so blood tests are not able to detect syphilis infection. At least 6 to 8 weeks after the hard chancre occurs, Treponema pallidum can enter the blood in large numbers to reproduce, produce non-specific antibodies and specific antibodies, at this time syphilis serological tests are positive, to determine whether syphilis. Examination results, normal in the same day or every other day can come out. Conditional, early syphilis can scrape hard chancre surface exudate, observed in the dark field microscope activity of syphilis spirochete, can be clearly diagnosed syphilis.