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What Would Cause False Positive Syphilis Blood Test

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Ask the Experts

Can an hiv antibody test false-positively react to syphilis?

I decided to go get tested for hiv a couple of months ago. I went to this non-profit testing site and i had an oraquick rapid test and a western blot done. Both of them came back positive and i was in shock. I didnt know how to accept that. Then...
Richard Cordova III

Response from Richard Cordova III

Test Positive Aware Network
Hi there:Thanks for writing in. When a person is infected with HIV, Syphilis can cause a much more severe decline in the CD4 count. In regards to Syphilis being misinterpreted for HIV, the answer is no. Please see a previous answer by Dr. Bob for... Read more »

Possible causes of false-positive home blood test

Hi, I'm about to take my first HIV test, and plan to use a rapid blood test (Home Access... Read more »
Articles
U.S. Centers for Disease Control and Prevention

Supervised Blood-Based Self-Sample Collection and Rapid Test Performance: A Valuable Alternative to the Use of Saliva by HIV Testing Programs With No Medical or Nursing Staff

Some saliva-based HIV testing initiatives, the authors wrote, "have resulted in an unacceptable percentage of false positives," while in many countries doctors or nurses are required for blood-based HIV testing programs. In the current study, the... Read more »
U.S. Centers for Disease Control and Prevention

Questions and Answers: False-Positive Oral Fluid Rapid HIV Tests

What is the significance of the reported increases in false positives when using the oral fluid HIV test in New York City sexually transmitted disease (STD) clinics? It is important to keep in mind that overall oral fluid tests have performed well.... Read more »
U.S. Centers for Disease Control and Prevention

Overview of False-Positive Oral Fluid Rapid HIV Tests

The New York City Department of Health and Mental Hygiene (NYC DOHMH) describes "False-Positive Oral Fluid Rapid Tests, New York City 2005-2008" in the Centers for Disease Prevention and Control's (CDC's) June 18, 2008 Morbidity and Mortality... Read more »
U.S. Centers for Disease Control and Prevention

San Francisco Clinics Getting High False-Positive Rate on Oral HIV Test

According to San Francisco Department of Public Health officials, analyses of more than 6,000 rapid-result oral HIV tests conducted in city public health clinics since spring found 47 positive results in patients who were negative in follow-up... Read more »
Connect With Others

Reasons for a false-positive?

Posted by Anonymous, 1 Reply
I made an appointment to have a rapid test done tomorrow, but am not clear if it's the blood or saliva test. My question is: what are some of the factors that could possibly create a false-positive test, particularly for the oral test? I've had... Read more »

False Positive?

Posted by Anonymous, 2 Replies
Does anyone know if marijuana could cause a false positive test result (specifically for an HIV DNA by PCR)? I smoked a lot about five days prior to my test. Also, I am on an antidepressant/anti-anxiety medication called Effexor (150 mg). Does... Read more »

What things cause a false positive?

Posted by Anonymous
....on a rapid (oraquick) test?

Are their certain medical conditions, medicines, etc that cause these false positives???

Just wodering why they happen? Read more »

Likelihood of False Positive with ELISA?

Posted by jp976, 1 Reply
Last Januaury I had unprotected anal sex in which the man ejaculated inside me. I was so nervous that I didn't have the guts to tell him to wear a condom. I just found out yesterday that I tested positive for HIV on the ELISA test. It was a blood... Read more »