2 doctors weighed in:

1 positive chlamydia test, then 2nd and 3rd were negative w/ swabs and urine to be sure as it didnt seem right. Advice on how false positives happen?

2 doctors weighed in
Dr. Hunter Handsfield
Internal Medicine - Infectious Disease
1 doctor agrees

In brief: Type of test done

The most accurate and most common chlamydia tests use nucleic acid amplification and almost never are falsely positive.
There is also a "DNA probe" test, less costly and still done by some labs, which sometimes give false pos results. However, even here the large majority of positves are true. If two partners have neg and pos results, usually the negative is false. Both partners need treatment.

In brief: Type of test done

The most accurate and most common chlamydia tests use nucleic acid amplification and almost never are falsely positive.
There is also a "DNA probe" test, less costly and still done by some labs, which sometimes give false pos results. However, even here the large majority of positves are true. If two partners have neg and pos results, usually the negative is false. Both partners need treatment.
Dr. Hunter Handsfield
Dr. Hunter Handsfield
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