STI testing for men typically involves one or more of three simple sample types: a urine sample, a swab, or a blood draw. The specific combination depends on which infections are being screened for, since no single test covers every STI. Most visits take under 30 minutes, and the process is far less uncomfortable than many men expect.
Urine Tests
A urine sample is the most common way men get tested for chlamydia, gonorrhea, and trichomoniasis. You urinate into a cup, and the sample gets sent to a lab for analysis. That’s it.
The key detail: you need to provide a “first-catch” sample, meaning the first part of your urine stream rather than midstream. This captures cells and bacteria from the urethra, which is where these infections live. You’ll urinate directly into the cup until it’s roughly one-third full, then finish in the toilet. You should avoid urinating for at least 20 minutes before the test (ideally an hour) so enough bacteria accumulates for detection. Don’t clean or wipe your genitals beforehand either, as that can wash away the very cells the lab needs to find.
Swab Tests
Swabs are used to diagnose chlamydia, gonorrhea, herpes, and HPV. For genital testing, a thin swab is inserted about 2 to 4 centimeters into the urethra (the opening at the tip of the penis), rotated gently for two to three seconds, then removed. It’s brief and can feel uncomfortable, but it’s over quickly. In many clinics, urine testing has replaced urethral swabs for chlamydia and gonorrhea screening, so you may not need one at all unless a swab is specifically required.
If you have visible sores, blisters, or unusual discharge, the provider will likely swab those directly. Herpes, for example, is most accurately diagnosed by swabbing an active sore rather than through a blood test.
Throat and Rectal Swabs
Chlamydia and gonorrhea can infect the throat and rectum, not just the genitals. CDC guidelines recommend that men who have sex with men get screened at all sites of sexual contact at least once a year, including rectal and throat swabs for gonorrhea and rectal swabs for chlamydia. These swabs are self-explanatory: a throat swab feels like a strep test, and a rectal swab involves briefly inserting a swab just inside the anus. Some clinics allow you to collect the rectal swab yourself. These tests matter because infections at these sites often cause no symptoms but can still be transmitted.
Blood Tests
HIV, syphilis, and hepatitis B and C are all diagnosed through blood samples. Depending on the test, this means either a standard blood draw from your arm or a quick finger prick.
HIV testing comes in three forms, each with a different detection window after exposure:
- Rapid antibody tests use a finger prick or oral swab and deliver results in about 20 minutes. They detect HIV 23 to 90 days after exposure.
- Lab-based antigen/antibody tests use blood drawn from a vein and can detect infection 18 to 45 days after exposure. A finger-prick version of this test takes longer, with a window of 18 to 90 days.
- Nucleic acid tests (NAT) detect the virus itself rather than your immune response, narrowing the window to 10 to 33 days after exposure. These are typically reserved for people with a known recent exposure or early symptoms.
Any positive result from a rapid or finger-prick test requires a confirmatory blood draw from a vein before a diagnosis is made.
Syphilis is also detected through blood testing. If you have an active sore (called a chancre), a provider may swab it directly as well.
Visual Examination
Some STIs are diagnosed simply by a provider looking at your genitals. Genital warts caused by HPV are typically identified on sight, without any lab test. There is no approved test to determine a man’s overall HPV status, and HPV screening tests are not recommended for men. If you notice unusual bumps, warts, sores, or rashes, a visual exam is often the fastest path to a diagnosis.
How Long Results Take
Turnaround times vary by test type. Rapid HIV tests deliver results in about 20 minutes. Chlamydia results can come back within 24 hours when processed in a lab. Gonorrhea typically takes one to three days, herpes two to three days, and syphilis two to five days. If your clinic sends samples to an outside lab, add a day or two for transit. Many clinics will call or message you with results, while others ask you to check an online patient portal.
How Often to Get Tested
Testing frequency depends on your sexual activity and risk factors. CDC guidelines recommend that men who have sex with men get screened for chlamydia and gonorrhea at least once a year at all sites of contact, regardless of condom use. Men with multiple partners or those on HIV prevention medication (PrEP) are often advised to test every three to six months.
For heterosexual men at low risk, the CDC notes there isn’t strong evidence to support routine screening. That said, testing is still recommended any time you have a new partner, have had unprotected sex, or are experiencing symptoms like unusual discharge, burning during urination, or sores.
Where to Get Tested
You can get tested at a primary care office, an urgent care clinic, a sexual health clinic, or your local health department. Many pharmacies and community health centers also offer testing, sometimes at low or no cost. Home test kits for HIV, chlamydia, and gonorrhea are available as well. These typically involve collecting a urine sample or finger-prick blood sample and mailing it to a lab. The convenience is appealing, though in-person testing allows for a physical exam and throat or rectal swabs when needed.
Testing is straightforward and private. You don’t need to have symptoms to request it, and most providers won’t ask you to justify why you want screening. If you’re unsure which tests to ask for, tell the provider about your recent sexual activity and they’ll recommend the right panel.