Testing for chlamydia in men is straightforward: you either pee in a cup or have a swab taken, and results typically come back within a few days. The standard test is called a nucleic acid amplification test (NAAT), which detects the bacteria’s genetic material with over 90% sensitivity and 99% or higher specificity. It’s the most accurate option available and the one recommended by the CDC.
About 50% of men with chlamydia have no symptoms at all, which makes testing the only reliable way to know your status.
What the Test Involves
For most men, chlamydia testing means providing a urine sample. Specifically, you’ll collect what’s called a “first-catch” sample, which is the very first part of your urine stream rather than a midstream sample. This matters because the bacteria concentrate near the opening of the urethra, so the initial flow is more likely to pick them up. You’ll urinate into a sterile cup, and that’s it.
The other option is a urethral swab, where a thin swab is inserted briefly into the tip of the penis to collect cells. This sounds uncomfortable, and it can be for a moment, but it’s quick. Evidence shows urine samples perform just as well as urethral swabs for detecting chlamydia in men, and in some situations urine is actually superior. Most clinics default to urine collection because it’s easier and equally accurate.
If you’ve had oral or anal sex, a urine test won’t detect infections in your throat or rectum. Those sites require separate swab samples. The CDC recommends that men who have sex with men get tested at all sites of contact, not just through urine.
How to Prepare
The single most important preparation step: don’t urinate for at least one to two hours before your test. Urinating flushes bacteria out of the urethra, which can lead to a false negative. If you’re heading to a clinic or lab, plan accordingly. Some sources recommend a one-hour minimum, while others suggest two hours for the best accuracy. Holding for at least two hours is the safer bet if you can manage it.
No other special preparation is needed. You don’t need to fast, avoid sex for a certain period, or stop any medications beforehand.
When to Test After Exposure
Chlamydia doesn’t show up on a test immediately after exposure. The bacteria need time to multiply enough for the test to detect them. Testing too early can produce a false negative.
The general guideline is to wait at least one week after a potential exposure, which catches most infections. Waiting two weeks catches nearly all of them. If you test at one week and get a negative result but still have concerns, retesting at the two-week mark gives you the most confidence.
Where to Get Tested
You can get a chlamydia test at your primary care doctor’s office, an urgent care clinic, a sexual health clinic, or a local health department. Many of these settings test for chlamydia and gonorrhea simultaneously using the same sample, since the infections frequently occur together.
At-home test kits are also available. These typically involve collecting a urine sample or swab at home and mailing it to a lab. The lab analysis itself is reliable, but the accuracy depends heavily on whether you collect the sample correctly. Providers have noted that improper collection at home is a real concern, particularly if you don’t follow timing instructions like the two-hour urination window. If you go this route, follow the kit’s instructions precisely.
How Long Results Take
Lab-based NAAT results generally come back within one to five business days, depending on the lab and clinic. Some sexual health clinics with on-site labs may return results faster. At-home kits add shipping time on top of the lab processing, so expect results within about a week of mailing your sample.
Most clinics will contact you by phone, patient portal, or text when results are ready. If your test is positive, treatment is simple and effective with a short course of antibiotics.
Who Should Get Tested and How Often
Unlike for women under 25, there’s no blanket screening recommendation for heterosexual men at low risk. But testing makes sense after unprotected sex with a new partner, if a partner tests positive, or if you develop symptoms like burning during urination or unusual discharge.
For men who have sex with men, the CDC recommends testing at least once a year at all sites of sexual contact, regardless of condom use. If you’re on PrEP, living with HIV, or you or your partners have multiple sexual partners, testing every three to six months is recommended. Rectal chlamydia in particular often produces no symptoms and will be missed entirely without a site-specific swab.
What Symptoms Look Like When They Appear
Half of men with chlamydia never notice anything wrong. When symptoms do show up, they typically appear one to three weeks after exposure and include a burning sensation when urinating, a watery or milky discharge from the penis, or pain and swelling in one or both testicles. Rectal infections can cause discharge, pain, or bleeding, though they’re often silent too.
The absence of symptoms is not evidence that you’re clear. A test is the only way to know, and untreated chlamydia can lead to complications including inflammation of the reproductive tract that, in rare cases, affects fertility.