Sources. CDC, Preexposure Prophylaxis for the Prevention of HIV Infection in the United States – 2021 Update: A Clinical Practice Guideline (stacks.cdc.gov); CDC, Sexually Transmitted Infections Treatment Guidelines, 2021, the section on men who have sex with men (cdc.gov); the U.S. prescribing information for Apretude (cabotegravir) and Yeztugo (lenacapavir). Last checked against these documents in July 2026.
This calculator provides general educational information based on published CDC and USPSTF guidelines for STI testing frequency. It is not a medical device, diagnostic tool, or substitute for individualized medical advice. The output reflects general population-level guidance and does not account for your specific health history, risk factors, symptoms, or provider recommendations. Do not rely on this calculator to determine whether you need testing. Consult a qualified healthcare provider for recommendations specific to your situation. De Nihil LLC provides this tool on an informational basis only and assumes no liability for health decisions made in reliance on its output.