Doctor insights on:
Donor Rapid Plasma Reagin Rpr
Rapid plasma reagin (rpr) is a blood test that looks for non-specific antibodies that may indicate that the organism (treponema pallidum) that causes syphilis is present. The term "reagin" means that this test does not look for antibodies against the actual bacterium, but rather for antibodies against substances released by cells when they ...Read more
After a 8 year exposure and a 12 month exposure I just got tested for std rpr and hiv duo @ 1 3 6 12 mos and fta abs at 12 mos is it conclusive?
No syphilis or HIV: For sure you don't have HIV or syphilis, no worries. You have been seriously over tested. The HIV duo test is conclusive any time 4 weeks or more after exposure, and the RPR syphilis at any time 6 weeks or more. YOu didn't need an FTA-ABS test, and all HIV tests beyond for weeks were wasted money. You also should have urine or vaginal swab tests for chlamydia and gonorrhea. ...Read more
Asked yesterday but question was not really answered. Which comes positive first for syphilis RPR or cia?
CIA?: An appropriate syphilis test involves two stages: the RPR is done FIRST- if positive, a confirmatory test such as an "FTA-ABS' or an "EIA for TPA" must be done. The 2-stage test is more cost effective and decreases the number of 'false positive' results. Discuss this important question further with your ordering doctor. ...Read more
Syphilis: It's very helpful. There are a few false postives. Best wishes. ...Read more
Nothing: There is no such thing as false positive for the HIV 4th generation test. If result is positive, you have HIV. False positive RPR is quite common, but usually no important health problem. But I wonder if you are confused about terminology? If results are negative, your question should be about false negative results. If neg results at more than 4-6 weeks, you don't have HIV or syphilis. Period. ...Read moreSee 1 more doctor answer
Blood testing in U.S: To have any blood test in the U.S. There are significant rules about the sensitivity and specificity of the test. If you are negative and it is two years since exposure you are negative. Please move on. Your family and your friends are ready for the obsession to stop. ...Read more
Generally speaking..: Generally speaking there are more problems with the RPR being falsely positive than being falsely negative. Even though it would be uncommon to have a false negative result you should discuss with your doctor other risk factors to determine if follow up testing is necessary. ...Read more
It can happen: Revised reply: disregard earlier one if you saw it. At first I misunderstood the question. The newer TP specific IgG/IgM tests (EIA etc) and RPR/VDRL have similar seroconversion times, typically 4-6 weeks. The IgG tests often are positive first, but exact frequency of this isn't yet known -- more study needed. Apologies again if any confusion from earlier reply. ...Read moreSee 1 more doctor answer
Rpr tests are accurate when it comes to a negative result aren't they? It's been 2 years since unprotected sex. I know i'm worrying for nothing
Worrying for nothing: But, miss, your worrying for nothing is taking time away from real medical problems on this site. Please stop asking the same question. I think I have counted over ten times asking the same question. That is offensive, bothersome and rude behavior. The answers are not changing. Perhaps it is time to get yourself to a psychiatrist to figure out why you feel it is appropriate to be so paranoid. ...Read more
I might have been infected with syphilis four years ago. A few months ago i recieved an RPR test and the results were nonreactive. Am i in the clear?
Unclear: Were you treated? What is the result of the confirmatory test? Would have that done. ...Read more