Doctor insights on:
False Positive Syphilis Test Pregnancy
When your due date arrives, you will be more than ready to have your baby! Most women deliver the baby somewhere between 37 and 42 weeks. According to the American College of Obstetricians and Gynecologists, only 5% of babies arrive on the exact due date. Approximately 7% of babies are not delivered by 42 weeks, and when that happens, it is referred to ...Read more
Yes, early infection: It takes a few weeks for the blood tests to become positive, so false neg is common soon after infection. Once infction is established and a few weeks have passed, false negatives are rare. And even in those rare circumstances, the infection usually is not active or likely to be damaging. If outwardly healthy, a neg blood test is virtually 100% assurance against active or transmissible syphilis. ...Read more
Can 1g azythromycin taken 10 days after exposure give a "false" negative" syphilis test at 3 month test?
No: This should not cause a false negative ...Read more
How could syphilis test be negative and anticardiolipin autoantibody be positive? Do some syphilis tests only look for antibodies to t. Pallidum?
Can psoriasis cause biological false positive syphilis (RPR)? can I have BFP syphilis and have nothing wrong with me and never get autoimmune disease?
I keep get biological false positive syphilis (through rpr) I don't have lupus. I do have psoriasis. Can I have BFP and never get autoimmune disease.
Yes: Plenty of folks have biologic false positives and are otherwise completely healthy. ...Read more
I have antibodies that produce positive ANA screening and false positive syphilis screening. What does that mean?
I have antiphospholipid antibodies greater than 150, false positive syphilis, positive ana, mouth sores and joint pain. I think lupus? Dr thinks ra.
Syphilis is caused: By a bacterium called treponema pallidum. Syphilis can be diagnosed by finding non-specific antibodies in the blood (rapid plasma reagin or rpr), examining for bacteria in samples from open sores under a microscope (primary ; secondary syphilis) or in some cases examination of cerebropsinal fluid via lumbar puncture. ...Read more
Sounds ok, until...: Until the next time one has sexual or other intimate contact with a person carrying syphilis. Of course, it is very hard to tell if the people you meet have syphilis... so live carefully... and see the doctor for routine check-ups according to the doctor's advised screening schedule. ...Read more
Syphilis is a sexually transmitted disease caused by a bacteria called Treponema pallidum. It is not related in any way to Hepatitis B (which is a virus). Both are sexually transmitted, however.
The tests for these two diseases are very different, and Hepatitis B will not be shown on a test for syphilis. You list that you already have Hepatitis B, so I am assuming you've been tested. ...Read more
Need expert advice. After sex, how long should you wait until you get a syphilis test to make sure the virus has already shown up?
Early syphilis: Initial syphilis manifests on the average of 21 days as a painless ulcer in mucosa/genital areas... If this lesion was missed becuase the ulcer is normally painless I would get the test in 2 months. That being said, I would also get a test for other sexually transmitted diseases like hepatitis C and B and HIV. Syphilis is a spirochete -- a type of spiral-shaped bacteria and not a virus. ...Read more
How long would the RPR syphilis test be accurate after infection. Would it be accurate between 1-2 years after exposure or is it less reliable then?
Very reliable: First, RPR is no longer the usual first blood test for syphilis. Most labs now start with an IgG ELISA. Either this or RPR is always positive within 6 weeks. In other words, a negative test more than 6 weeks after the last posssible exposure, including 1-2 years, proves you do not have active syphilis. However, a positive results isn't necessarily reliable; positives require confirmatory testing. ...Read more
Wb indicating protein 41 active. I read its a lot of controversy about p41.Dfm showed spirochetes and gemmas. Syphilis test negative. Is it lyme?
Be skeptical: Lyme disease is not transmitted sexually, but through bites from infected ticks. Diagnosis using western blot is complicated and requires review of the entire blot and assessment of your other symptoms and risks. Dfm reliability is dependent on the person doing it, and may be manipulated in an attempt to sell you unproven or even dangerous treatments for lyme disease. ...Read more
If I had unprotected sex in beginning or end of October and got a HIV test and syphilis test at the beginning of Jan would it be an accurate result?
If my blood test is reactive for syphilis both on the RPR and fta-abs lab tests should I get another blood test to confirm?
No: That is how the diagnosis is made. You should get treated. ...Read more
Did vdrl test about 3 days after ulcer appeared and 2 weeks and a half after I might have been infected with syphilis. Test was -. How accurate?
Too soon for VDRL: It takes up to 6 weeks for the VDRL test to become positive, so your negative result does not rule out syphilis. However, syphilis is rare these days in most heterosexual populations in the US. Herpes is the most common cause of genital ulceration. But if your doctor strongly suspects syphilis, you should be treated for it now, without waiting for blood test to be positive. Good luck. ...Read more
I’ve had syphilis test at 3weeks 4 weeks and 41 days all negative am I good to move on from this nightmare?
Only a screening tst:
A weakly reactive syphilis test or RPR test is a screening test. Syphilis and other things can cause this test to be positive. The definitive test is the FTA, or Flourescent Treponemal Antibody test. This is specific for Syphilis and if this is positive then you have the disease. ...Read more
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?
I have read on health tap that 6 weeks is good for a syphilis test, mine done at 39 days instead of 42....still valid?
Your question: If test is positive it is valid. If negative should be repeated in two weeks ...Read more
I have had 2 syphilis test done. 1 at 22 days and one at 6 weeks. Both non reactive. Should I test again or should I not worry anymore?
Stop worrying: 6 week negative test means UR free & clear. ...Read more
I have read on that 6 weeks after a possible exposure is good for a syphilis test, mine was done at 39 days instead of 42. Still valid? 3 days matter?
Here are some. ..: Generally speaking the number or values as quoted in the literature are so-called normal "range" to cover some 95% of cases and should be used as references of daily medical practice and living, not at 100% like machine. In practice, it's good idea to combine high vigilance and keen diligence to assess history, practice safe sex, and rouse professional alertness so to test timely - not rigidly. ...Read more
Asked question about wife false positive yesterday, her confirmatory test done by CIA rather than TPPA or FTA-Abs...is that ok?
Did pregnancy test was faint positive I've had massive back pain, bleeding and cramping nauseas now few days later nothing am I pregnant or false alarm?
My RPR was Postive with titer 1:1 for syphilis but my FTA-ABS was Non Reactive. What does that mean? I'm being treated.
Syphilis: You need to ask your treating physician to explain thes results to you ...Read more
Devasting 4 baby: Syphilis can cause serious congenital complications for a baby. Getting it treated is extremely important. The testing is simple and the treatment is penicillin shots. This can be fatal for infants. Surviving infants can suffer from failure to thrive, severe rash, no bridge to the nose, chronic nasal discharge and other complications. Get tested and treated. ...Read more
No: If it has been treated successfully it will not transfer to the baby ...Read more
In Sep 2016 I had a medical abortion, So in Feb 2017 took a pregnancy test and it came out positive. Is this test accurate or false positive?
Tests are accurate: Home pregnancy tests are very accurate and not affected by foods, herbs, common illnesses, sexually transmitted diseases, vaginal spotting, or medications. A test gives a reliable result 3 weeks after sex, so the question is could there be a new pregnancy since September. If a repeat test a few days later is still positive, then a pregnancy is the likely cause. ...Read more
Pregnancy test: I am unaware thtat microscopic hematuria can cause a false postive on a pregnancy test. ...Read more
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