A 30-year-old male asked:
If i want to do a syphilis test 3/4 months from exposure, is vdrl or rpr better, may i be informed of the accuracy of the vdrl, tpha, rpr tests, whether at 3/4 months the accuracy can reach 100% to rule out syphilis?
1 doctor answer • 1 doctor weighed in
Dr. Gurmukh Singhanswered
Pathology 51 years experience
Either test is appropriate.
Visit these sites for information on this topic: Syphilis window period:
https://www.e7health.com/post/155/std-test-window-when-should-i-get-tested/#:~:text=The%20average%20window%20period%20or,it%20develops%20in%20three%20stages.
https://www.cdc.gov/std/syphilis/stdfact-syphilis-detailed.htm
Created for people with ongoing healthcare needs but benefits everyone.
Answered Nov 27, 2022
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A 28-year-old male asked:
Dear kind doctor, reverse algorithmn syphilis test by use TPHA and result negative after 204 days, just read that RPR is better to detect primary syphilis, should i take RPR or VDRL as traditional test ? or it is already enought ? thank you?
Dr. Birendra Tandananswered
Urology 36 years experience
RPR is a better tyest
Created for people with ongoing healthcare needs but benefits everyone.
Answered Feb 23, 2023
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A 42-year-old male asked:
If you tested negative on a syphilis RPR lab test at 14 weeks. and a Syphilis antibody lab test at 8, 12 and 14 weeks, would you also test negative on a VDRL test at 20 weeks? Taking a medical visa test soon, just anxious about it?
Dr. Hunter Handsfieldanswered
Infectious Disease 55 years experience
You have been over tested. You do not have syphilis. You don't need another test. If wherever you're traveling requires syphilis testing with a visa a... Read More
Created for people with ongoing healthcare needs but benefits everyone.
Answered Jul 09, 2023
A 30-year-old male asked:
Rash on palm and feet 1month not itchy or hurt ,air-fill blister 1st week of rash test HIV rapid , syphilis TPHA , VDRL/RPR all is negative 3rd week re-test again still negative Dr doxycycline100mg x2/d for 2 week do i was treat correctly?
Dr. Hunter Handsfieldanswered
Infectious Disease 55 years experience
Not HIV or syphilis: With these test results plus continuing rash afer 2 weeks of doxycycline, you can be 100% certain neither HIV nor syphilis is the cause of the rash o... Read More
Created for people with ongoing healthcare needs but benefits everyone.
99 viewsReviewed Apr 23, 2023
A 32-year-old male asked:
How accurate would a RPR test be for late latent syphilis (approx. 24-30 months after unprotected sex)? Or would a FTA-ABS/VDRL be more accurate?
Dr. Jeff Livingstonanswered
Obstetrics and Gynecology 24 years experience
Both are good: Both are good accurate tests. Most labs start with the inexpensive RPR as a screening test and the do an FTABS if positive. Some labs go straight for ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
2.3k viewsReviewed >2 years ago
A 33-year-old male asked:
Is very very late syphilis hard to test for? I know RPR/VDRL can be negative, but will trep tests (CIA/EIA/TPPA/FTA) still be positive? Can anything affect them and turn them negative? Can sensitivity be low due to waning/fewer antibodies?
Dr. Hiep Leanswered
Nephrology and Dialysis 44 years experience
If both nontreponemal (VDRL/RPR) and treponemal (FTA/ABS) tests are negative, chance of syphilis (whatever stage) is very unlikely. If you have sympto... Read More
Created for people with ongoing healthcare needs but benefits everyone.
Answered Feb 18, 2023
Last updated Nov 27, 2022
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