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A member asked:
Can rpr test for syphilis give false negative?if syphilis is highly suspected should i retest for it ?
2 doctors weighed in across 2 answers
The false: Negative rate is low though i can't quote it. I would retest if for nothing other than to ease your mind. Good luck but i bet u don't have it.
Answered 1/23/2013
5.3k views
Prozone effect: False (-) in RPR syphilis testing occurs when there is a prozone effect. Why? It's because the concentration of syphilis antibodies is so high, it interferes with the antigen-antibody interactions that result in a (+) reaction. A false (-) result can also occur during primary syphilis since not enough time has passed to allow high enough antibody levels for a (+) reaction to occur.
Answered 1/12/2015
5.3k views
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Would alcohol effect RPR or EIA syphilis blood test? Consumed over 36+ hours prior. Can it create a false negative?
4 doctors weighed in across 2 answers
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