Short answer

If you are sexually active, STI testing can protect your health and your partners. What to test for and how often depends on age, pregnancy, local risk, sexual practices, symptoms, partners, and injection-drug equipment exposure.

Use this hub as a decision map

The best STI testing page depends on the question you are trying to answer. Some questions are about routine screening, some are about symptoms, some are about a recent exposure, and some are really about privacy, cost, partner notification, or whether the right body site was tested.

72

Urgent timing

Possible HIV exposure, condom breaks, emergency contraception, and sexual-assault care can have time-sensitive next steps.

 SX

Symptoms

Discharge, sores, rash, pelvic pain, testicular pain, rectal symptoms, or urinary symptoms change the testing question.

 BS

Body sites

Urine, throat swabs, rectal swabs, genital swabs, blood tests, and lesion swabs answer different questions.

 PN

Panel gaps

A "full panel" is not a standard test menu. Ask which infections, body sites, and time windows are actually covered.

 PR

Privacy and access

Insurance, EOBs, health portals, cash pay, Title X clinics, and local health departments can affect where someone tests.

 FU

Follow-up

Positive, unclear, or symptom-related results may need treatment guidance, partner steps, confirmation, or repeat testing.

How exposure questions are consolidated

Lab Intel keeps the public STI hub organized around broad, reusable pages: oral sex, anal sex, condom breaks, partner diagnosis, sex toys, genital touching, dry humping, precum, sex without ejaculation, ejaculation outside the body, symptoms, and body-site testing. Narrow variants such as semen on a specific surface, small wound, piercing, fingernail, or piece of clothing are better handled by one of these broader guides unless a future review shows a clear, source-backed reason to publish a separate page.

Reader safety: No exposure page should be used to rule out care when there are symptoms, pregnancy concerns, possible HIV PEP timing, sexual assault, a known partner result, or anxiety that is interfering with daily life. Those situations deserve clinical or public-health follow-up.

Start here

STI testing guide

When to test, what tests cover, self-collection, and follow-up questions.

 Guide STI symptoms vs routine screening

Symptoms, diagnostic testing, body sites, and when a routine panel may not be enough.

 Guide STI symptoms but negative results

Timing, body-site gaps, missing tests, non-STI causes, and follow-up questions when symptoms continue.

 Guide Abnormal lab result next steps

How to handle positive, negative, borderline, inconclusive, or conflicting results before changing care.

 Core Lab test accuracy, false positives, and false negatives

Specimen, timing, confirmatory testing, and why a negative result may not answer every exposure question.

 Core CLIA-certified lab vs FDA-authorized test

How to check lab quality, FDA review, home-use claims, and follow-up before using an at-home or direct-access kit.

 Core Lab test privacy, insurance, and data sharing

HIPAA limits, EOBs, confidential communications, cash pay, portals, and app-data questions before testing.

 Core Lab test cost, insurance, and cash pay

Coverage, EOBs, cash-pay testing, low-cost clinics, in-network labs, and surprise-bill questions.

 Core STI testing for sores, ulcers, or rash

Herpes lesion swabs, syphilis blood tests, monkeypox rash testing, HIV testing, and urgent-care questions.

 Guide STI testing for discharge

Urethral, vaginal, cervical, and rectal discharge testing, including swabs, NAATs, BV, yeast, UTI, and Mgen questions.

 Guide STI testing for pelvic or testicular pain

PID, epididymitis, torsion red flags, UTI overlap, pregnancy questions, and when pain needs urgent care.

 Guide STI testing after condom break or exposure

Urgent PEP timing, emergency contraception, baseline STI testing, window periods, body-site swabs, and repeat testing.

 Guide STI testing after sexual assault

SAFE exams, baseline STI testing, HIV PEP timing, emergency contraception, vaccines, privacy, and follow-up.

 Guide STI testing after an anonymous partner

One-night stand timing, baseline tests, HIV PEP, emergency contraception, body-site swabs, and repeat testing.

 Guide STI testing after vacation or travel sex

Travel partner timing, urgent PEP questions, emergency contraception, body-site swabs, vaccines, and follow-up records.

 Guide STI testing before stopping condoms

Recent results, window periods, body-site testing, HIV prevention, pregnancy prevention, and partner agreements.

 Guide STI testing in open relationships

Recurring testing, multiple partners, body-site swabs, PrEP, DoxyPEP, vaccines, privacy, and result-sharing agreements.

 Guide STI testing after sharing sex toys

Shared toy timing, condoms on toys, cleaning, body-site swabs, BV, HPV, HIV anxiety, and repeat testing.

 Guide STI testing after genital touching or fingering

Hand jobs, mutual masturbation, HIV anxiety, skin-to-skin STIs, symptoms, sores, and when testing matters.

 Guide STI testing after dry humping or genital rubbing

Clothing, grinding, skin-to-skin STIs, HIV anxiety, pregnancy questions, symptoms, and when testing matters.

 Guide STI testing after precum exposure

Pre-ejaculate, HIV risk, pregnancy questions, PEP, emergency contraception, body sites, symptoms, and timing.

 Guide STI testing after sex without ejaculation

Pulling out, body sites, HIV PEP, pregnancy prevention, symptoms, condoms, and repeat testing.

 Guide STI testing after ejaculation outside the body

Semen on skin, vulva, clothing, surfaces, pregnancy questions, HIV risk, PEP, symptoms, and timing.

 Guide STI testing after oral sex

Throat swabs, urine limits, syphilis and HIV blood tests, oral-anal exposure, symptoms, and timing questions.

 Guide STI testing after anal sex

Rectal swabs, urine limits, HIV PEP and PrEP timing, proctitis symptoms, blood tests, and follow-up questions.

 Guide STI testing after a partner has an STI

Known exposure steps, when testing is not enough, EPT, HIV PEP timing, body-site swabs, and repeat testing.

 Guide HIV testing window period

HIV test types, timing after exposure, and when retesting matters.

 Guide Chlamydia and gonorrhea testing

Screening, sample types, self-collection, and site-specific testing questions.

 Guide Syphilis testing guide

RPR, VDRL, treponemal tests, pregnancy screening, and follow-up.

 Guide Herpes testing guide

HSV swabs, blood tests, false positives, and why routine screening is different.

 Guide At-home STI tests vs clinic testing

Self-tests, self-collection, FDA authorization, body-site coverage, and follow-up.

 Guide Positive STI result next steps

Treatment, partner notification, confirmatory testing, prevention, and retesting.

 Guide STI retesting after treatment

3-month retesting, test of cure, syphilis follow-up, and symptom-based care.

 Guide Partner notification and EPT

Partner treatment, EPT, HIV and syphilis testing, and state-law caveats.

 Guide Free and low-cost STI testing

CDC GetTested, health departments, Title X clinics, insurance, privacy, and follow-up.

 Guide STI testing privacy and insurance

EOBs, confidential communications, preventive coverage, Title X, and cash-pay questions.

 Guide Full STI panel

What panels include, what they miss, body-site testing, herpes, timing, and follow-up.

 Guide STI testing after a new partner

What to test for, when to test, body-site swabs, symptoms, and repeat testing.

 Guide STI testing for pregnancy planning

Before pregnancy, early prenatal screening, partner testing, and when repeat testing matters.

 Guide DoxyPEP and STI testing

CDC guidance, follow-up testing, body-site screening, and what doxyPEP does not prevent.

 Guide PrEP labs and STI testing follow-up

HIV testing, kidney function, hepatitis B, lipids, STI screening, and oral versus injectable follow-up schedules.

 Guide PrEP vs PEP testing timelines

72-hour PEP window, follow-up HIV tests, STI screening, and when PrEP monitoring starts.

 Guide Extragenital STI testing

Throat and rectal swabs, urine-test limits, and site-of-contact testing questions.

 Guide Hepatitis B and C testing

Blood tests, HBV vaccination and immunity, HCV RNA confirmation, and STI-panel caveats.

 Guide Trichomoniasis testing

Why trich may be missing from panels, NAATs, wet mount limits, symptoms, and retesting.

 Guide HPV testing and Pap tests

Cervical cancer screening, cotesting, self-collection, abnormal results, and STI-panel limits.

 Guide Mycoplasma genitalium testing

When Mgen testing is considered, NAAT samples, resistance, persistent symptoms, and panel limits.

 Guide BV and yeast testing vs STI testing

Vaginitis swabs, pH, wet mount, NAAT panels, symptoms, and STI testing gaps.

 Guide UTI testing vs STI testing

Urinalysis, urine culture, STI urine NAATs, symptoms, and when both may be needed.

 Guide Pelvic exam vs STI testing

Pelvic exams, Pap and HPV tests, STI swabs, urine tests, blood tests, and what to ask.

 Guide

Common CDC screening points

  • Everyone ages 13 to 64 should be tested at least once for HIV.
  • Sexually active women younger than 25 should be tested yearly for chlamydia and gonorrhea.
  • Some women 25 and older should test yearly for chlamydia and gonorrhea based on risk factors such as new or multiple partners.
  • Sexually active gay, bisexual, and other men who have sex with men should test at least yearly for syphilis, chlamydia, gonorrhea, and HIV, with more frequent testing for some people.
  • Pregnant people should be tested early in pregnancy for syphilis, HIV, hepatitis B, and hepatitis C; some need repeat testing or chlamydia and gonorrhea testing.

Self-test versus self-collection

A self-test is completed by the person and can produce results directly. Self-collection means you collect a sample at home or in another setting and send it to a lab. CDC notes FDA-approved self-collection options are available for HIV, syphilis, chlamydia, and gonorrhea.

Timing matters for HIV

HIV tests have different window periods, so a negative result after a possible exposure depends on the test type and timing. Read the HIV testing window period guide.

Symptoms change the testing question

Routine screening can be useful without symptoms, but discharge, sores, pelvic pain, rectal symptoms, urinary symptoms, or testicular pain can require diagnostic testing and clinician evaluation. Read the STI symptoms versus routine screening guide.

Negative results do not always end the question

If symptoms continue after negative STI results, ask whether testing matched the right infection, body site, sample type, exposure timing, and follow-up need. Read the STI symptoms but negative results guide.

Sores, ulcers, and rash need lesion-aware testing

Genital, anal, oral, or unexplained skin sores can require herpes lesion swabs, syphilis blood-test interpretation, HIV testing, monkeypox testing in compatible rashes, or non-STI evaluation. Read the sores, ulcers, and rash testing guide.

Discharge depends on body site

Urethral, vaginal, cervical, and rectal discharge can require different sample types and follow-up. Read the STI testing for discharge guide.

Pain is not just a lab-panel question

Pelvic, lower abdominal, testicular, scrotal, or severe rectal pain can require prompt clinical evaluation, not just routine screening. Read the STI testing for pelvic or testicular pain guide.

Condom breaks and exposure timing

A condom break or possible exposure can raise urgent HIV PEP, emergency contraception, baseline testing, body-site testing, and repeat-testing questions. Read the condom break and possible exposure guide.

Sexual assault or nonconsensual exposure

After sexual assault, testing should connect to care: safety, SAFE exam options, STI testing and treatment, HIV PEP timing, emergency contraception, vaccines, privacy, and follow-up. Read the STI testing after sexual assault guide.

Anonymous partner or one-night stand

After an anonymous partner or one-night stand, testing depends on what happened, timing, body sites, symptoms, HIV PEP questions, pregnancy possibility, and repeat-testing windows. Read the anonymous partner STI testing guide.

Vacation or travel sex

Travel sex can add urgency and logistics: PEP timing, emergency contraception, body-site swabs, vaccines, access away from home, records, and follow-up after return. Read the STI testing after vacation or travel sex guide.

Before stopping condoms

Before stopping condoms with a partner, testing should cover both partners, window periods, body sites, symptoms, HIV prevention, pregnancy prevention, and what happens if new partners enter the picture. Read the STI testing before stopping condoms guide.

Open relationships and multiple partners

Open relationships and multiple-partner networks work better with a repeatable testing agreement: frequency, body sites, prevention tools, symptoms, privacy, and result-sharing. Read the open relationship and multiple-partner testing guide.

Sharing sex toys

Shared sex toys can raise testing and prevention questions about condoms on toys, cleaning, body-site swabs, BV, HPV, HIV anxiety, symptoms, and repeat testing. Read the STI testing after sharing sex toys guide.

Genital touching or fingering

Genital touching, fingering, hand jobs, and mutual masturbation are usually lower-risk than vaginal or anal sex, but symptoms, sores, skin-to-skin contact, damaged skin, anal contact, shared toys, or a known partner result can change the testing question. Read the STI testing after genital touching or fingering guide.

Dry humping or genital rubbing

Dry humping, grinding, outercourse, and genital rubbing are usually lower-risk when clothing stays on, but bare skin contact, sores, symptoms, semen near the vaginal opening, shared toys, or a known partner result can change what to ask. Read the STI testing after dry humping or genital rubbing guide.

Precum exposure

Precum exposure questions depend on route and body site: intact skin or clothing is different from vaginal, anal, oral, mucous-membrane, pregnancy, PEP, condom-break, or symptom concerns. Read the STI testing after precum exposure guide.

Sex without ejaculation

Pulling out before ejaculation does not protect against STIs. Testing still depends on vaginal, anal, oral, skin-to-skin, symptom, pregnancy, PEP, condom, and partner-result details. Read the STI testing after sex without ejaculation guide.

Ejaculation outside the body

Ejaculation outside the body can mean semen on skin, clothing, bedding, vulva, mouth, anus, eye, or near the vaginal opening, and each situation has different STI, HIV, pregnancy, and symptom questions. Read the STI testing after ejaculation outside the body guide.

Testing after oral sex

Oral sex can raise throat-swab, urine-test, blood-test, oral-anal exposure, and symptom-specific questions. Read the STI testing after oral sex guide.

Testing after anal sex

Anal sex can raise rectal-swab, urine-test, HIV PEP or PrEP, proctitis symptom, blood-test, and recurring screening questions. Read the STI testing after anal sex guide.

Testing after a partner has an STI

A partner's positive result can require testing, treatment guidance, EPT questions, HIV PEP timing, body-site swabs, and repeat testing depending on the infection. Read the STI testing after a partner has an STI guide.

Body site matters for chlamydia and gonorrhea

Urine or genital swabs may not answer every exposure question. People who have had oral or anal sex should ask about throat and rectal testing options. Read the extragenital STI testing guide, or go deeper with the chlamydia and gonorrhea testing guide.

Syphilis testing is pattern-based

CDC says syphilis diagnosis usually requires both nontreponemal and treponemal blood tests, interpreted with symptoms, exposure history, pregnancy, and prior treatment. Read the syphilis testing guide.

Herpes screening is different

CDC and USPSTF do not recommend routine herpes blood-test screening for most people without symptoms because false positives and unclear interpretation can cause harm. Read the herpes testing guide.

At-home testing can help, but coverage matters

At-home STI testing can improve access, but the kit must match the infection, specimen type, body site, timing, and follow-up need. Read the at-home STI tests versus clinic testing guide.

A positive result needs a next-step plan

After a positive STI result, the next questions are treatment, partner notification, whether confirmation is needed, how to prevent reinfection, and when to retest. Read the positive STI result next steps guide.

Retesting after treatment

Some follow-up tests look for reinfection around 3 months, while a test of cure is an earlier check used in selected situations. Read the STI retesting after treatment guide.

Partner notification and EPT

Partners may need notification, testing, treatment, or expedited partner therapy depending on the infection, timing, symptoms, and state rules. Read the partner notification and EPT guide.

Finding affordable testing

CDC GetTested, local health departments, community clinics, and Title X family planning clinics can help people find confidential free or low-cost STI testing, but test menus and costs vary by site. Read the free and low-cost STI testing guide.

Privacy, insurance, and EOBs

Using insurance can lower cost, but claims, EOBs, portals, mail, and lab bills can create privacy questions. Read the STI testing privacy and insurance guide.

Full panel is not a standard term

A "full STI panel" can mean different things at different clinics and labs. Ask which infections, body sites, and time windows the testing covers. Read the full STI panel guide.

Testing after a new partner

After a new partner, testing depends on what happened, when it happened, symptoms, and which body sites were exposed. Read the STI testing after a new partner guide.

Pregnancy planning and prenatal testing

If you are trying to become pregnant or already pregnant, STI testing becomes part of preventive care for you, your partner, and a future baby. Read the STI testing for pregnancy planning guide.

DoxyPEP and follow-up testing

DoxyPEP can reduce the chance of some bacterial STIs for selected people, but it does not replace HIV and STI screening. Read the DoxyPEP and STI testing guide.

PrEP labs and follow-up testing

HIV PrEP care includes repeat HIV testing, STI screening, and medication-specific lab monitoring such as kidney function or lipids. Read the PrEP labs and STI testing follow-up guide.

PrEP versus PEP timing

PrEP is planned HIV prevention before possible exposure, while PEP is urgent prevention after a possible exposure and has a 72-hour evaluation window. Read the PrEP vs PEP testing timelines guide.

Throat and rectal swabs

A negative urine test may not answer whether chlamydia or gonorrhea is present in the throat or rectum. Read the extragenital STI testing guide.

Hepatitis B and C blood tests

Hepatitis B and C may be part of sexual health care, but they are not included in every STI panel and use different blood-test markers. Read the hepatitis B and C testing guide.

Trichomoniasis and panel gaps

Trichomoniasis is common but is not always included in routine or “full” STI panels. Read the trichomoniasis testing guide.

HPV and Pap tests

HPV tests and Pap tests are mainly cervical cancer screening tools, not general STI panels. Read the HPV testing and Pap tests guide.

Mycoplasma genitalium

Mycoplasma genitalium is usually a targeted follow-up test for persistent or recurrent symptoms, not routine screening for asymptomatic people. Read the Mycoplasma genitalium testing guide.

BV, yeast, and vaginitis panels

BV and yeast tests can explain vaginal symptoms, but they are not the same as a broad STI screen. Read the BV and yeast testing versus STI testing guide.

UTI testing and STI testing

Urinalysis and urine culture can help evaluate UTI symptoms, but they do not automatically check for chlamydia, gonorrhea, or other STIs. Read the UTI testing versus STI testing guide.

Pelvic exams and STI testing

A pelvic exam, Pap test, HPV test, STI swab, urine test, and blood test can answer different questions. Read the pelvic exam versus STI testing guide.

Important: Positive, unclear, or symptom-related results should lead to care, treatment guidance, and partner notification steps through a qualified health professional or public health clinic.