Chlamydia testing
Chlamydia is detected by looking for the bacterium's genetic material in a sample from the site of possible infection — most commonly a vaginal swab or a urine sample.
Diagnik Health Library · Updated
Sample types
- Self-collected vaginal swab — used by the at-home Visby test.
- Urine sample — used in clinics, and the usual route for people with a penis.
- Throat or rectal swab — needed when exposure was oral or anal, and only available through a clinician.
What results mean
- Positive: chlamydia was detected. Contact a clinician for antibiotics and tell recent partners.
- Negative: nothing was detected at that site. A very recent exposure may not yet be detectable.
Retesting after treatment
Clinicians often recommend retesting about three months after treatment, because reinfection from an untreated partner is common. That is a clinical decision, not something a self-test can decide for you.
Tests mentioned in this guide
Frequently asked questions
- Can a urine test detect chlamydia?
- Yes, urine-based testing is standard in clinics, particularly for people with a penis. Diagnik's at-home option uses a self-collected vaginal swab.
- Does a negative test rule out chlamydia everywhere?
- No. A vaginal swab tests that site only. Throat and rectal infections need site-specific swabs through a clinician.
Not sure which test you need?
Three questions, about a minute, and one clear recommendation. No account needed.
Find my testKeep reading
- chlamydia
At-home chlamydia testing
A self-collected swab, a palm-sized device, and a result in about half an hour.
- sti testing
How STI testing works
Two different questions — has your immune system responded, or is the organism here?
- chlamydia
Chlamydia symptoms
Discharge, burning, pelvic pain — or, most often, nothing at all.
Related testing pages
Sources
Educational information only, not a medical diagnosis or treatment advice. Screening results always need confirmation by a clinician.
This guide is general health information about screening tests. It is not a diagnosis and does not replace care from a clinician. See our medical disclaimer.