I have severe OCD and I know I upset you both when I ask questions, but I am really scared and can't get any straight answers, if you want to help me out and answer the question I will be very grateful, if you don't I understand and consider a donation to your fine organization.  I had two RPR tests in 2013 both negative - but my risk factors if they were risk factors were years before these RPR tests - anywhere from 3-11 years before.  I never had symptoms always used a condoms for vaginal sex, most of the time for oral but I did sleep with FSWs.  I also may have drank alcohol 24 hours before these tests, but can't remember.  Anyway my fear was that because most of the risk factors were years after I took the test I felt like I may have tertiary syphilis and the sensitivity for RPR test in that cohort is around 73%.  You guys assured me I was fine, although I never mentioned I may have drank 24 hours before.  Having OCD I decided to get the reverse algorithm done were I had an EIA / IA test last year, it was also negative - my questions (1) when I try to find sensitivity / specificity for this test its always NA for the tertiary cohort - why is that?  (2) did I get the wrong test done?  Or can you use sensitivity / specificity for the overall performance of all stages? (3) Am I negative or do I need to take a TPHA or FTA-Abs test to truly find out if I have tertiary syphilis because I was so far from "supposed" risk factors that would be the only thing I could have if I have syphilis?  (4) Is all this meaningless and I am syphilis free since I had no real symptoms - no chancre, never had sex with men, etc.  Please answer this - I am really suffering, and my OCD while improving still gets me from time to time - if you don't want to answer I understand.

1) Sensitivity and specificity don't matter. Negative is negative on all tests you have had.---