1. Start with the reason you are testing
Routine screening, a new partner, a known exposure, pregnancy, and new symptoms can call for different tests. Be ready to share when an exposure may have happened and whether it involved oral, vaginal, or anal sex. That information helps determine which samples and anatomical sites may need testing.
2. Choose a testing setting
| Setting | May be useful when… | Keep in mind |
|---|---|---|
| Clinic or healthcare provider | You have symptoms, need an exam, or want individualized recommendations. | Ask about cost, confidentiality, and which sites will be tested. |
| Online order + local lab | You value convenience and want sample collection at a participating laboratory. | The available panel may not match every exposure or anatomical site. |
| At-home self-test or collection | You prefer privacy at home and an authorized option exists for the infection. | Availability and follow-up support vary. Confirm what a result means. |
3. Ask about the window period
A test may not detect an infection immediately after exposure. The appropriate timing varies by infection and test method. Avoid relying on a universal online chart; ask the test provider or a clinician when to test and whether repeat testing is recommended.
4. Understand sample sites
Blood and urine tests do not answer every question. The CDC notes that people who have had oral or anal sex should discuss throat and rectal testing options with a healthcare provider. A service limited to blood and urine samples may not cover those sites.
5. Plan for either result
- Ask how results are delivered and who can access them.
- Know whether clinician consultation is included or costs extra.
- Ask what confirmatory testing may be needed after a reactive result.
- Discuss treatment, partner notification, and retesting with a clinician.
Reliable places to continue
Read the CDC’s current STI testing guidance or use the CDC testing locator to find confidential free or low-cost services near you.
Editorial review: Reviewed July 24, 2026. Medical guidance changes; confirm timing, sample sites, and follow-up with the testing provider or a licensed clinician.