Gonorrhea Testing: How It Works, When to Get Tested, and What Results Mean

Key takeaways

• Gonorrhea testing is typically performed with a nucleic acid amplification test (NAAT), which detects the bacterium's genetic material and is considered highly sensitive.
• Testing can use a urine sample or a swab from the genital area, rectum, or throat, depending on the sites exposed and the reason for testing.
• Many people with gonorrhea have no symptoms, so routine screening is recommended for sexually active people in certain risk groups.
• A negative result generally means no infection was detected at the time of testing, but it does not protect against future infection.
• Gonorrhea is treatable with antibiotics, and retesting after treatment may be recommended in some situations.

What Gonorrhea Testing Detects

Gonorrhea testing looks for evidence of the bacterium Neisseria gonorrhoeae in a sample taken from the body. The most common method is nucleic acid amplification testing, often called NAAT, which detects specific genetic material from the bacterium. NAATs are widely used because they are sensitive and can be run on urine or swab samples, and they may also be combined with testing for chlamydia in a single collection.

Different test methods exist, including culture, which grows the bacterium in a laboratory and can be useful in certain situations such as evaluating antibiotic resistance. However, culture is less commonly used for routine diagnosis because it requires specific collection and transport conditions. Your clinician chooses the method based on your symptoms, exposure history, and the sample sites being tested.

Sample Types and How Samples Are Collected

The sample used for gonorrhea testing depends on which parts of the body may have been exposed. A first-catch urine sample is commonly used for people with a penis and can detect infection in the urethra. For people with a vagina, a vaginal swab or a clinician-collected cervical swab may be used. Swabs can also be taken from the rectum or the throat when those sites may have been exposed during oral or anal sex.

Some collection methods can be done by the patient. For example, a self-collected vaginal swab or a urine sample may be an option in many settings, and self-collected rectal or throat swabs are increasingly available. A clinician can explain which sites should be tested based on your individual circumstances, because testing only one site may miss an infection present at another site.

Who Should Be Tested and How Often

Screening recommendations focus on people at higher risk of infection. Sexually active women under 25 years of age and older women with risk factors such as a new sex partner, more than one sex partner, a partner with an STI, or a partner with other partners are generally advised to be screened annually. Pregnant women are often screened early in pregnancy because infection can affect both the pregnant person and the newborn.

Sexually active men who have sex with men are frequently advised to be tested at least annually, with more frequent testing for those at higher risk. Testing at exposed sites, such as the throat and rectum, is important in this group because urine testing alone may not detect infections at those locations. Anyone with symptoms or a known exposure should be tested promptly rather than waiting for a routine screening interval.

Understanding Results and Next Steps

A positive result means the bacterium was detected in the sample and treatment is needed. Gonorrhea is treatable with antibiotics, and treatment is typically given as an injection or oral medication depending on current guidelines and local resistance patterns. Because gonorrhea and chlamydia often occur together, treatment may also cover chlamydia when that infection has not been ruled out. Sexual partners should be evaluated and treated as well to prevent reinfection.

A negative result means the bacterium was not detected in the sample at the time of testing. However, a negative result does not mean you cannot get gonorrhea in the future, and testing too soon after an exposure can sometimes miss an infection because it takes time for the bacterium to reach detectable levels. If you have ongoing risk, repeat screening at recommended intervals is important. Follow your clinician's advice about retesting after treatment, which may be recommended in some cases.

Frequently Asked Questions

Sources

• CDC: Gonorrhea – CDC Basic Fact Sheet
• CDC: STI Treatment Guidelines – Gonorrhea
• MedlinePlus: Gonorrhea Test
• Mayo Clinic: Gonorrhea
• NIH: National Institute of Allergy and Infectious Diseases – Gonorrhea