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chlamydia test - false positive Or false negative reasons?

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Recently I had my annual paps done, they took a swab test during my check up and a few days later called and told me I tested positive for chlamydia. It just didn't seem right so before I took any antibiotics I got tested at another clinic and they also did the swab. They told me I tested negative for it. Just in case, I went to one more clinic they used a urine test & they also said I tested negative. I went back to the clinic that I tested positive in and they said it's very unlikely that it was a false positive & more likely for a false negative. I tested again at this clinic and I'm waiting for the results. What could have been the reason that I tested false positive? Or what would be reasons why I tested false negative TWICE?! Could it be any medicine that can interfere? What about feminine products?


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replied September 21st, 2011
(online)
Sexually Transmitted Diseases Answer A27029
Hi,
Welcome to the ehealthforum and I am really glad to help you out.

It is possible to get false positive or false negative results with the standard tests for Chlamydia. Hence it would be wise to repeat the tests. Else you can opt for specific tests for Chlamydia which include Nucleic acid amplification tests (NAAT, to find the genetic material of Chlamydia), Nucleic acid hybridization tests (DNA probe test, Enzyme-linked immunosorbent assay (ELISA, EIA), Direct fluorescent antibody test (DFA) or chlamydia culture.

It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. For exact diagnosis, you are requested to consult your doctor. I sincerely hope that helps. Take care.


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