STI Screening Interval Reference (CDC)
A CDC-derived screening-interval reference for sexually transmitted infections by population.
Open the reference table → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Inputs and output
- What you enter
Nothing. This one is a lookup table rather than a calculator.
- What you get
- The screening table: population, the tests indicated, and the interval for each.
What this is
A CDC-derived screening-interval reference for sexually transmitted infections by population: chlamydia and gonorrhea (annual screening in all sexually active women under 25 and in older women with risk factors; annual or more frequent extragenital screening in MSM; routine in pregnancy), syphilis (universal pregnancy screening; annual or more frequent in MSM, people with HIV, and people who use IV drugs), HIV (at least once for all adults 13-64; annual or more frequent in higher-risk populations), trichomoniasis (women with HIV), and HSV / HPV / HBV / HCV per the current CDC guidance. This tool labels who is screened, what is screened, and how often.
When to use it
Use this at a primary-care, women's-health, sexual-health, or HIV-prevention visit to make sure the right panel is being ordered for the patient in front of you. The recommendations move - most recently around extragenital (pharyngeal, rectal) NAAT screening in MSM and around expanded screening in pregnancy - so check the current CDC STI Treatment Guidelines when the right answer is borderline. Screening is necessary but not sufficient: high-risk patients also need PrEP counseling, hepatitis vaccination if not immune, and partner-services referral when an infection is found.
How this is calculated
CDC Sexually Transmitted Infections Treatment Guidelines, 2021 (MMWR Recomm Rep 2021;70(4):1-187) and the CDC screening recommendations by population. Read the source ↗
Source: CDC STI Screening Recommendations
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.