No, the time does not matter. Even if someone catches syphilis, most cases "burn out", i.e. go away without treatment. If that happens, the RPR may become negative. But if there is active syphilis that has any chance of doing harm, the RPR is always positive--whether 1 year, 5 years, or 20 years after infection.
thanks you very much Doctor. That really help me alot.
DR. HHH I have another question. So you mean it doesnt matter how long or how many years (5 years ) if you have syphilis the RPR blood test would let you know if you have negative or postive? Thanks you very much for your help as I am just scare.
Why all the questions all of a sudden about false negative RPR tests? Are you the same person as smith2006, jgh, and/or vjay2004? Or did you all just see the same (apparently unreliable) website? Read my responses to their questions, all in the past 3 days.
It is exceedingly rare for someone to have active syphilis with a negative RPR. First, most street prostitutes don't have syphilis. Probably less than 1 in 10,000 have active syphilis that could be transmitted by oral sex. Second, if you caught syphilis from oral sex, almost certainly you would have noticed the sore of primary syphilis (the chancre) on your penis. (It's hard to miss a sore that lasts 3-6 weeks before it goes away.) Third, if you had been infected, the RPR would have been positive. The combination of low risk, no symptoms, and negative RPR prove unequivocally you did not catch syphilis.
Best wishes-- HHH, MD