Short answer
Gonorrhea testing pairs highly sensitive NAAT (every exposed site sampled separately) with cultures where resistance intelligence matters. A dual system built for an organism that is actively evolving past antibiotics.
In practice that means urine or a genital swab plus throat and rectal swabs matched to your exposures, with a culture added when treatment fails, the throat is involved, or surveillance needs susceptibility data.
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See Tests & Prices →Sample set. What gets collected and why
- First-catch urine or a genital swab covers genital infection; vaginal swabs are generally preferred over urine for accuracy in people with a vagina.
- Throat swabs cover oral exposure. Throat gonorrhea is common and almost always silent, so it is missed unless specifically swabbed.
- Rectal swabs cover anal exposure for the same reason.
- Cultures are collected from the same sites when susceptibility answers would change management.
- Gram stains add rapid presumptive data in symptomatic men (visible intracellular diplococci), but never replace NAAT.
Each site needs its own sample. A negative urine result says nothing about the throat or rectum.
If you had oral or anal exposure, ask explicitly for those swabs; see Throat STI Testing: Who Might Need It for when throat sampling applies.
Timing. When each site turns positive
Gonorrhea NAAT is typically detectable around 2–7 days post-exposure at genital sites, with throat and rectal sites following similar ranges.
Testing the morning after exposure is too early and produces false reassurance.
A practical approach: test promptly for baseline and symptom triage, then retest once the window has closed if the first test fell inside it.
Early negatives after a high-risk exposure get short-interval retests rather than clearance. Your clinician will date the retest from the exposure, not from the first visit.
Culture’s role. When DNA is not enough
NAAT finds gonococcal DNA; only culture grows live bacteria for susceptibility testing, showing which antibiotics still work.
Cultures are indicated for treatment failures, pharyngeal infections (where resistance concentrates and clearance is less certain), disseminated disease, partner-therapy failures, and surveillance programs.
Where culture is indicated, collect it before antibiotics when possible. Treatment sterilizes cultures quickly while NAAT can stay positive from dead organisms.
Follow-up testing. Cure and reinfection are separate questions
Test-of-cure is recommended for throat infections and for persistent symptoms anywhere (cultures preferred, timed to avoid dead-DNA positives).
Separately, routine 3-month retesting for reinfection applies across all sites after any gonorrhea diagnosis. Reinfection via untreated partners is common and usually silent.
Partners need simultaneous evaluation and treatment, with abstinence until everyone has completed therapy.
When to seek care
With discharge or exposure (multi-site sampling from the start), for cultures when symptoms survive treatment, and on retesting schedules covering all previously positive sites.