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Chlamydia (PCR)

Chlamydia Test (PCR): What It Looks For

This PCR test looks for the DNA of Chlamydia trachomatis, the most common bacterial STI. The sample is usually urine or a swab, not blood. It can give you clarity even when there are no symptoms.

Doctor's Assessment Included

Reference Ranges

Expected result Negative

Reference ranges may vary between laboratories. When you order a test, a BIG-registered doctor assesses your personal results in context. For treatment decisions, discuss your results with your GP.

Check your own value

Chlamydia (PCR): what this test measures

This test uses polymerase chain reaction (PCR) technology to detect even very small amounts of Chlamydia trachomatis DNA in a sample. By amplifying genetic material, it can identify an active infection with high accuracy.

Unlike antibody tests, a PCR test directly detects the presence of the bacterium, making it the most reliable method for confirming a current chlamydia infection.

Chlamydia (PCR): why this value matters

Many chlamydia infections cause no noticeable symptoms, so someone can carry it without knowing. Knowing your status can help you and a doctor decide on possible next steps. Left unaddressed, an infection may sometimes affect reproductive health.

Chlamydia (PCR): when is testing worthwhile?

Chlamydia is generally detectable from about 1 to 2 weeks (around 14 days) after possible exposure. Testing too soon may give a result that is not yet reliable. A doctor can help you decide on the right timing for your situation.

Chlamydia (PCR): what to do about an abnormal value

Male

If Low

Not detected result indicates no chlamydia infection. Continue safe sexual practices.

If High

Detected result requires antibiotic treatment (typically azithromycin). Notify partners and abstain from sexual activity until treatment completed.

Female

If Low

Not detected result indicates no chlamydia infection. Continue safe sexual practices.

If High

Detected result requires antibiotic treatment (typically azithromycin). Notify partners and abstain from sexual activity until treatment completed.

Chlamydia (PCR): lifestyle and this value

Consistent and correct condom use significantly reduces the risk of chlamydia transmission. Regular STI screening, particularly with new sexual partners, supports early detection and prevents the spread of infection.

If diagnosed with chlamydia, complete the full course of prescribed antibiotics and inform recent sexual partners so they can be tested and treated. Avoid sexual contact until treatment is completed and confirmed successful by your healthcare provider.

Chlamydia (PCR): frequently asked questions

Is a chlamydia test done with blood?

A chlamydia PCR test usually uses a urine sample or a swab, not blood. It looks for the DNA of the bacteria.

How soon after exposure can chlamydia be detected?

It can often be detected from about 1 to 2 weeks after possible exposure. Testing earlier may not yet be reliable, so a doctor can advise on timing.

What should I do if my chlamydia test is positive?

A positive result is not a final diagnosis on its own. It is best to discuss the result with a huisarts or the BIG-registered doctor, who can confirm it and advise on next steps.