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A member asked:
Do nontreponemal syphilis testsbecome unreliable over time? can they pick up a syphilis infection after five years? should i trust a - result atp?
A doctor has provided 1 answer
Syphilis testing: If u have a positive syphilis test, this needs further evaluation. There are essentially 2 different kinds of tests -specific ones (antibody tests like FTA-ABS, TPA) and nontreponemal serological tests (RPR, VDRL). You can certainly have 'latent' syphilis years after an exposure that wasn't treated properly. It's also possible the non-treponemal test is reacting against something else. See ID doc.
Answered 12/28/2015
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Dear STD expert, I had VDRL,RapidTPHA,prozonetest,rapid blood hiv 5&9 months after exposure, results (-), is that that valid? wondering if im infected with HIV&syphilis at the same time, can be double infection delay my antibody test,am i need retest?
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