Short answer
A positive STI result is a prompt for care, not a judgment. The next steps are to confirm exactly which infection and body site were positive, get treatment or linkage to care, ask whether the result needs confirmation, notify recent partners, avoid sex until the recommended point, and schedule retesting when CDC guidance recommends it.
The details depend on the infection. A positive chlamydia or gonorrhea NAAT usually leads directly to treatment and partner follow-up. A reactive HIV screening test needs confirmatory testing and linkage to HIV care. A syphilis result depends on the test pattern, RPR or VDRL titer, symptoms, and prior treatment. A herpes blood-test result may need careful interpretation because false positives can happen.
First steps by priority
| Step | What to clarify | Why it matters |
|---|---|---|
| Identify the infection and sample site | Was it chlamydia, gonorrhea, syphilis, HIV, trichomoniasis, herpes, hepatitis, Mgen, or something else? Was it urine, throat, rectal, vaginal, cervical, blood, or lesion swab? | Treatment, partner steps, and retesting depend on both infection and site. |
| Ask whether confirmation is needed | HIV screen, syphilis algorithm, low-positive HSV-2 IgG, or discordant results? | Some positives are acted on quickly; others need confirmatory testing before final interpretation. |
| Get treated or linked to care | Where will treatment happen, what medicine is needed, and what if you are pregnant or allergic? | Untreated STIs can cause complications and ongoing transmission. |
| Plan partner steps | Who should be notified, tested, treated, or connected with partner services? | Partner follow-up helps prevent reinfection and protects partners' health. |
| Schedule retesting | Is this a 3-month retest, a test-of-cure, syphilis titer follow-up, HIV follow-up, or symptom-based return visit? | Retesting is not the same for every STI. |
Do not interpret every positive result the same way
Chlamydia or gonorrhea: CDC's public guidance says to get treated, tell partners, and get retested in 3 months. CDC treatment guidance also says people diagnosed with chlamydia should be tested for HIV, gonorrhea, and syphilis, and gonorrhea follow-up should consider chlamydia testing if not already documented.
HIV: a reactive screening result requires the recommended HIV testing algorithm, confirmatory testing, and prompt linkage to HIV care if HIV is diagnosed. CDC notes that partner services can also help with partner notification, linkage to care, PrEP, PEP when exposure was within 72 hours, and other prevention services.
Syphilis: interpretation is pattern-based. CDC says a presumptive diagnosis requires both nontreponemal and treponemal tests, and follow-up often uses quantitative RPR or VDRL titers. Prior treatment, pregnancy, symptoms, and neurologic, eye, or ear symptoms can change urgency.
Herpes: a positive lesion swab is different from a positive blood antibody test. CDC says false-positive herpes blood-test results can occur, especially compared with chlamydia or gonorrhea testing, so low-positive or unexpected results deserve careful discussion.
Treatment and sex timing
Ask for clear instructions before leaving the clinic or portal message thread. For chlamydia, CDC says people should abstain from sex for 7 days after single-dose therapy or until completing a 7-day regimen and until symptoms resolve if present. CDC gonorrhea guidance similarly emphasizes avoiding condomless sex until 7 days after both partners have completed treatment and symptoms have resolved.
Do not use a negative partner test as proof that no partner follow-up is needed. Timing, body site, untreated infection, false-negative tests, and new exposure can all confuse the story. If symptoms persist after treatment, return for care rather than assuming the medicine failed or the result was wrong.
Partner notification, partner services, and EPT
CDC encourages partner notification for STIs so exposed partners can get testing, treatment, and prevention services. Depending on the infection, local public health programs may offer partner services, where trained staff help notify partners confidentially and connect them with care.
Expedited partner therapy, or EPT, is a specific option in some situations: a clinician may provide medicine or a prescription for a sex partner without first examining that partner. CDC describes EPT as useful for partner management in some chlamydia and gonorrhea situations, where permitted by law. EPT is not the right answer for every STI, every partner, or every pregnancy situation, so ask what applies locally.
Retesting and reinfection
CDC recommends retesting 3 months after diagnosis for chlamydia or gonorrhea, and also recommends rescreening women 3 months after treatment for trichomoniasis. Syphilis follow-up is usually serologic and depends on stage, titer, HIV status, pregnancy, symptoms, and prior treatment. HIV follow-up depends on whether the result is confirmed, whether recent exposure is possible, and linkage to care.
A retest is not always a test-of-cure. For chlamydia and gonorrhea, the 3-month retest is often about catching reinfection. Test-of-cure is reserved for specific situations, such as pregnancy, persistent symptoms, some pharyngeal gonorrhea scenarios, or clinician concern about adherence, treatment failure, reinfection, or resistance.
Prevention after a positive result
A positive STI result is a good moment to review prevention without panic. Depending on your situation, that may include condoms, more frequent screening, body-site swabs, HIV PrEP, HIV PEP if a possible exposure was within 72 hours, hepatitis B vaccination, HPV vaccination, DoxyPEP discussion under current CDC guidance, and a partner-testing plan.
If paying for care, privacy, or insurance paperwork is the barrier, use a local health department, STI clinic, Title X clinic, student health center, urgent care, or CDC GetTested search as a starting point. Ask about confidential communication if insurance explanations of benefits are a concern.
When follow-up matters more
Follow-up matters more when the positive result is not clearly matched to the right infection, when symptoms persist after treatment, or when the timing suggests possible reinfection or an untreated partner. In that case, the next step is usually a clinician-guided plan for treatment, partner care, and repeat testing rather than trying to interpret the result in isolation.
Questions to ask
- Which infection and which body site were positive?
- Does this result need confirmatory testing before it is considered final?
- What treatment or linkage to care do I need, and what should I avoid until then?
- When can I have sex again, and does that depend on partner treatment?
- Which partners should be notified, tested, treated, or offered partner services?
- Is EPT allowed and appropriate for any partner in this situation?
- Should I also test for HIV, syphilis, hepatitis B, hepatitis C, pregnancy, or other STIs?
- When do I retest, and is that a test-of-cure or a reinfection screen?
FAQ
What should you do first after a positive STI test?
Confirm which infection was found, contact a clinician or clinic for the right treatment or linkage to care, ask whether partners need testing or treatment, avoid sex until the recommended time, and schedule any retesting that applies.
Do chlamydia and gonorrhea need retesting after treatment?
Yes. CDC says people treated for chlamydia or gonorrhea should be retested about 3 months after treatment because reinfection is common, regardless of whether they believe their partners were treated.
When can you have sex again after treatment?
The timing depends on the infection and treatment. CDC chlamydia and gonorrhea guidance commonly instructs people to avoid sex for 7 days after single-dose therapy or until completing a 7-day regimen, symptoms have resolved, and partners have been treated.
Do partners need treatment after a positive STI result?
Often, yes. Partner steps depend on the infection, timing, symptoms, pregnancy, and local guidance. CDC partner services and EPT guidance may help partners get notified, tested, treated, or linked to care.
Does every positive STI result need confirmation?
No, but some do. HIV screening needs confirmatory testing and linkage to HIV care. Syphilis requires interpretation of treponemal and nontreponemal results. Low-positive herpes blood tests may need confirmatory testing. Chlamydia and gonorrhea NAAT positives are usually acted on, but context still matters.
What if symptoms persist after STI treatment?
Persistent symptoms should be discussed with a clinician. Possibilities include reinfection, untreated partners, wrong body site tested, antimicrobial resistance, another infection, non-STI causes, pregnancy-related concerns, or complications such as PID or epididymitis.