Gonorrhea Testing: What to Know About Tests, Timing, and Results

Key takeaways

• Nucleic acid amplification tests (NAATs) are the most commonly recommended method for detecting gonorrhea.
• Testing can be done with a urine sample or with swabs from the genital area, rectum, or throat, depending on exposure history.
• Many people with gonorrhea have no symptoms, so screening is important even when you feel well.
• The time it takes for a test to turn positive after exposure varies, and retesting may be advised in some situations.
• Gonorrhea and chlamydia are often tested together because the two infections frequently occur at the same time.

How Gonorrhea Testing Works

Gonorrhea testing detects genetic material or, less commonly, whole bacteria from the Neisseria gonorrhoeae organism. The preferred approach in most clinical settings is a nucleic acid amplification test (NAAT), which identifies specific DNA or RNA sequences of the bacterium. NAATs are highly sensitive and specific, meaning they are good at finding true infections and unlikely to produce false positives from unrelated organisms.

Samples are collected in different ways depending on the site being tested. A first-catch urine sample is common for people with a penis and can detect urethral infection. For people with a vagina, a vaginal swab may be self-collected in a clinic or at home. Swabs of the rectum or throat are used when those sites may have been exposed, since a urine test will not detect an infection in the throat or rectum.

Who Should Get Tested and How Often

Screening recommendations focus on people at higher risk of infection. Sexually active women under 25 and older women with risk factors such as a new sex partner, more than one partner, a partner with an STI, or inconsistent condom use are generally advised to be screened annually. Pregnant women are typically screened early in pregnancy because gonorrhea can be passed to a newborn during delivery.

Sexually active men who have sex with men, people with HIV, and anyone with a recent known exposure are also advised to test regularly, often at least once a year and more frequently depending on behavior. Because gonorrhea can infect the throat and rectum without causing symptoms, testing at those sites is recommended when a person reports relevant sexual exposure. A clinician can help tailor the schedule to individual circumstances.

Timing, Window Periods, and Retesting

After a possible exposure, a test may not immediately turn positive. The time between exposure and when a test can reliably detect infection is sometimes called the window period. For NAATs, many clinicians suggest waiting about one to two weeks after exposure before testing, though guidance can vary. Testing too soon can produce a negative result even when an infection is present, so a follow-up test may be recommended.

If you have symptoms such as discharge, burning with urination, or pelvic pain, you should be evaluated promptly rather than waiting. In some cases, a clinician may recommend a test of cure after treatment, particularly when treatment adherence is uncertain or when symptoms persist. Retesting for reinfection is also commonly advised several months after treatment, since repeat infection is possible.

Understanding Your Results and Next Steps

A positive result means the bacterium was detected and treatment is needed. Gonorrhea is treatable with antibiotics, and current guidance recommends a specific injectable regimen because of antibiotic resistance. It is important to take treatment exactly as prescribed and to avoid sexual activity until a clinician confirms that you and your partners have completed treatment, which helps prevent reinfection and further spread.

A negative result generally means the infection was not detected at the time of testing, but it does not rule out an exposure that occurred too recently to show up. If you tested soon after a possible exposure, your clinician may recommend repeating the test. Partners of someone with gonorrhea should also be tested and treated, since reinfection from an untreated partner is common.

Frequently Asked Questions

Sources

• CDC: Gonorrhea Treatment and Screening Guidelines
• MedlinePlus: Gonorrhea Test
• NIH: Gonorrhea
• Mayo Clinic: Gonorrhea