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Reasons For False Positive ELISA

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Ask the Experts

positive ELISA negitive western

I have taken four HIV test. April, may, 2 In oct. They all had the same result positive ELISA negitive western. Last Dr says I have nothing to worry about. My question is what can give me a positive ELISA. Should I be worried I've had the same...
Robert J. Frascino, M.D.

Response from Robert J. Frascino, M.D.

The Robert James Frascino AIDS Foundation
...your doctor. A positive ELISA followed by a negative Western Blot is considered a negative HIV-screening test. There are many reasons for a falsely positive ELISA test. You can read about these in detail in the archives. What's important for you... Read more »

Elisa or Western Blot

...Blot test came back negative. I have looked up the reasons for false positive Elisas online and... Read more »

False Positive Elisa?

Hi - My husband recently had to have bloodwork done and his Elisa came back positive (repeatedly... Read more »
Articles
San Francisco AIDS Foundation

HIV Testing

...the Window Period guidelines after the last potential exposure, you are really HIV negative. An ELISA test may rarely be "false positive." False positive ELISA results can occur if someone is tested right after events that temporarily ... Read more »
The Body PRO

Early Expiration May Be Cause of Unusually High False-Positive Rates on OraQuick Rapid HIV Tests, Study Finds

...cluster of false-positive results -- where the test was functioning as expected, and then all of a sudden we had a number of false positives. This particularly happened in late 2005, and we had the manufacturer come in, CDC [U.S. Centers for... Read more »
San Francisco AIDS Foundation

Frequently Asked Questions About HIV/AIDS

...your last possible risk of possible exposure to HIV, you can feel safe in assuming that you do not have the virus. If for some reason you feel anxiety about relying on the 3-month result, you could opt to have another test taken again at 6... 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 Read more »
Connect With Others

Am I being ridiculous? Hiv false positive scare

Posted by belk13, 7 Replies
...Hello.. i tested "false positive" at the local clinic with an ora-sure rapid hiv 1/2 kit.. they immediatley followed it up with a second test (elisa) that was Read more »

Likelihood of False Positive with ELISA?

Posted by jp976, 1 Reply
...Now I'm just waiting for the results of the Western Blot test. I was just wondering if anyone could give me information about false positives such as the likelihood of having one and/or what could cause one. At this point I'd rather just know... Read more »

False Positives with the Elisa

Posted by Anonymous, 1 Reply
...Just wanted to clarify, if I could: Are you guys saying that the Elisa test will sometimes be positive, but they will then confirm it with a Western blot . . . . and if the Western blot is negative, Read more »

Do TWO false positive ELISA tests mean I'm okay?

Posted by bobarama, 1 Reply
...then had a flu like illness with a flat rash on my chest and stomach. A few weeks after that I tested and it was a positive ELISA with negative Western Blot. I went back to test again 7 months after the prior test which again had a positive... Read more »