How Often Should You Get Tested for STIs? A Guide Based on Your Situation

What does baseline STI screening include?

Public health guidelines recommend that all sexually active adults receive an HIV test at least once, with more frequent testing if at elevated risk 2Ref 2US Preventive Services Task Force; Owens DK, Davidson KW, Krist AH, et al. (2019).Screening for HIV Infection: US Preventive Services Task Force Recommendation Statement.Recommendation for all adults to be tested for HIV at least once and more frequently if at elevated risk. Adults aged 18 to 79 are also advised to have at least one hepatitis C screening; those with ongoing injection drug use or other risk factors should screen periodically 5Ref 5US Preventive Services Task Force (2020).Hepatitis C Virus Infection in Adolescents and Adults: Screening — USPSTF Recommendation Statement.Screening recommendation for hepatitis C in adults aged 18 to 79 as baseline STI and blood-borne-infection workup. Hepatitis B testing is indicated based on vaccination history and risk.

For chlamydia and gonorrhea — the most commonly reported bacterial STIs in the U.S. — annual screening is recommended for all sexually active people under 25, and for older adults with new or multiple partners 3Ref 3US Preventive Services Task Force; Davidson KW, Barry MJ, Mangione CM, et al. (2021).Screening for Chlamydia and Gonorrhea: US Preventive Services Task Force Recommendation Statement.Annual chlamydia and gonorrhea screening for sexually active people under 25 and for older adults with new or multiple partners. Syphilis testing is added based on individual risk factors. A clinician uses your sexual history to determine which tests are clinically appropriate 1Ref 1Workowski KA, Bachmann LH, Chan PA, Johnston CM, Muzny CA, Park I, Reno H, Zenilman JM, Bolan GA (2021).Sexually Transmitted Infections Treatment Guidelines, 2021.MSM three-month screening recommendation; multi-site testing guidance; prenatal STI screening standards; general STI screening protocols.

Who benefits from more frequent testing — every three to six months?

More frequent screening is generally recommended for people who 1Ref 1Workowski KA, Bachmann LH, Chan PA, Johnston CM, Muzny CA, Park I, Reno H, Zenilman JM, Bolan GA (2021).Sexually Transmitted Infections Treatment Guidelines, 2021.MSM three-month screening recommendation; multi-site testing guidance; prenatal STI screening standards; general STI screening protocols2Ref 2US Preventive Services Task Force; Owens DK, Davidson KW, Krist AH, et al. (2019).Screening for HIV Infection: US Preventive Services Task Force Recommendation Statement.Recommendation for all adults to be tested for HIV at least once and more frequently if at elevated risk3Ref 3US Preventive Services Task Force; Davidson KW, Barry MJ, Mangione CM, et al. (2021).Screening for Chlamydia and Gonorrhea: US Preventive Services Task Force Recommendation Statement.Annual chlamydia and gonorrhea screening for sexually active people under 25 and for older adults with new or multiple partners:

• Have multiple or concurrent sexual partners
• Do not use condoms consistently
• Are men who have sex with men (MSM) — guidelines specifically recommend HIV, gonorrhea, chlamydia, and syphilis testing at least every three months for sexually active MSM, along with multi-site testing (throat and rectal swabs in addition to urine) because those anatomical sites are infected silently
• Are on PrEP — PrEP follow-up requires HIV and STI testing every three months as part of standard care 4Ref 4Centers for Disease Control and Prevention (2021).Preexposure Prophylaxis for the Prevention of HIV Infection in the United States – 2021 Update: A Clinical Practice Guideline.Every-three-month HIV and STI testing requirement as part of PrEP follow-up care
• Have had a prior STI — one diagnosed infection substantially raises the probability of having or acquiring another
• Have a partner who has been recently diagnosed with an STI

This is not a moral judgment — it is an epidemiological one. More exposure opportunities mean a more frequent testing schedule is protective.

What if you are in a long-term monogamous relationship?

If both partners have been tested, results are negative, and the relationship is mutually exclusive, ongoing routine STI screening beyond periodic cervical cancer screening may not be necessary. The key is that *both* partners need to have been tested. Many people discover an STI they carried into a long-term relationship without ever knowing — particularly for infections like chlamydia or HPV that often cause no symptoms. A one-time comprehensive test when entering a new relationship is a practical baseline for both partners.

STI screening during pregnancy or before trying to conceive

Standard prenatal care includes routine STI screening — typically syphilis, HIV, hepatitis B, and gonorrhea and chlamydia at minimum — because untreated infections can affect the pregnancy and the newborn 1Ref 1Workowski KA, Bachmann LH, Chan PA, Johnston CM, Muzny CA, Park I, Reno H, Zenilman JM, Bolan GA (2021).Sexually Transmitted Infections Treatment Guidelines, 2021.MSM three-month screening recommendation; multi-site testing guidance; prenatal STI screening standards; general STI screening protocols. Chlamydia during pregnancy is associated with preterm birth and can be transmitted to the newborn during delivery. Getting tested and treated before conception is preferable when possible.

Understanding multi-site testing

A urine sample detects genital gonorrhea and chlamydia but will miss throat and rectal infections in people who have oral or anal sex. Pharyngeal gonorrhea in particular is often asymptomatic and can serve as a reservoir for transmission 1Ref 1Workowski KA, Bachmann LH, Chan PA, Johnston CM, Muzny CA, Park I, Reno H, Zenilman JM, Bolan GA (2021).Sexually Transmitted Infections Treatment Guidelines, 2021.MSM three-month screening recommendation; multi-site testing guidance; prenatal STI screening standards; general STI screening protocols. When you tell your clinician which types of sexual contact you have had, they can order swabs for the appropriate anatomical sites. If you feel uncomfortable disclosing that information, a sexual health clinic will ask in a clinical, non-judgmental way.

How to bring it up with a clinician

You can simply say: 'I would like comprehensive STI testing' or 'I am sexually active and want to confirm I am up to date on screening.' A clinician can help determine which tests are appropriate and on what schedule. Most primary care providers and sexual health clinics have this conversation regularly.

For people without easy access to a regular provider, community health centers, sexual health clinics, and telehealth options can provide confidential, low-cost, or free STI screening. At-home test kits are also available for some infections, though they cover fewer sites and conditions than a clinic visit.