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Doctor insights on: Is There Such A Thing As A False Positive Chlamydia Test

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Is there such a thing as a false positive chlamydia test?

Is there such a thing as a false positive chlamydia test?

Yes: All tests have both false positives (meaning you don't really have it) and false negatives (meaning you really do have it). Chlamydia testing is very accurate but yes a false test is possible. You can always requests a retest and the test can be done through a different lab for confirmation. ...Read more

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Dr. H. Hunter Handsfield
1,127 doctors shared insights

Chlamydia Infection (Definition)

Chlamydia infection is a sexually transmitted infection caused by a bacteria. Genital symptoms include burning on urination, vaginal or penile discharge, pain with sexual intercourse or no symptoms at all. In many patients without symptoms, chlamydial infections can spread upwards into the abdomen and cause serious complications due to scarring. Newborns can acquire chlamydial eye infection from birth ...Read more


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If you think you had a false positive chlamydia test, have already taken the medication to treat it, can you re-test or is it too late?

If you think you had a false positive chlamydia test, have already taken the medication to treat it, can you re-test or is it too late?

You can retest: If you have been treated with proper dose of antibiotics, chances are the test will be negative most of the time if treatment is successful. ...Read more

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What are percentages of false positive chlamydia test? Can swabs/samples get contaminated? I want to get retested because I don't believe it

What are percentages of false positive chlamydia test? Can swabs/samples get contaminated? I want to get retested because I don't believe it

False positives are: much rarer than false negative tests. No harm in re-testing, as long as you don't wait too long without treatment if you really need it. Chlamydia infection is women is usually asymptomatic, so you can have it without any symptoms. It is usually best to be on safe side and treat it. You can also infect your partner, so no sex until you get treated or get negative test. ...Read more

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Is a chlamydia test 100% accurate? How would you know if you have a false positive?

Is a chlamydia test 100% accurate? How would you know if you have a false positive?

90 - 95% accurate: However false positives do occur so that you can be retested & 2nd positive test would be definitive. You are free & clear if repeat is negative & 2 weeks have passed since encounter where you might have acquired it. ...Read more

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I tested positive for chlamydia, but my boyfriend tested negative in two different tests. Did I have a false positive?

I tested positive for chlamydia, but my boyfriend tested negative in two different tests. Did I have a false positive?

Not necessarily: It's common to find chlamydia in only one person in a couple. False pos tests are rare; probably your test is accurate but bf's tests maybe false neg. Or you had it first and he was not yet infected. Or he had chlamydia that cleared before he was tested. Or he could have been treated but not told you; or maybe an antibiotic for something else that cured his chlamydia. You both must be treated. ...Read more

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My fiance's test results came back neg. for chlamydia. Ive only been with him for 3 years, How possible is it that my test is a false-positive?

My fiance's test results came back neg. for chlamydia. Ive only been with him for 3 years,  How possible is it that my test is a false-positive?

Unlikely: The actual frequency of false positives and false negatives varies with the type of test, but in general, false negative Chlamydia test results are more common than false positives. I would believe your "positive" and treat it. If you two are sexually active, I would treat him, too, since his test may be false negative. ...Read more

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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?

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?

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. ...Read more

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Can a chlamydia test come back false positive?

Can a chlamydia test come back false positive?

I guess.: Laboratory errors are not unheard of; a repat test can clear up the confusion. ...Read more

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Ispossible to false negative test chlamydia after treatment? Tested positive, received treatment but retest 2 wks after b/c I felt I still had symptom

Ispossible to false negative test chlamydia after treatment? Tested positive, received treatment but retest 2 wks after b/c I felt I still had symptom

May be healing: The burning and some drip can persist for a few weeks after the microbes are gone. The testing also probably isn't altogether reliable. Yet another possibility is eating spicy stuff, especially those little peppers -- these can mimic chlamydial urethritis ...Read more

Chlamydia (Definition)

Chlamydia is a curable sexually transmitted infection that is caused by the bacteria chlamydia trachomatis. This bacteria infects mucous membranes of the urethra, vagina, cervix, anus, rectum, eyelid, and throat. Chlamydia may be asymptomatic but some patients experience pain or burning during urination, nausea, fever, vaginal discharge, ...Read more