Short answer
Preconception STI screening moves infection management from high-stakes pregnancy, where every decision carries fetal consequences and treatment options narrow, to low-stakes planning, where full testing, complete treatment, and verified cure happen on calm timelines.
Test both partners, treat everything found, update vaccines, optimize health, then conceive on cleared ground.
The few months invested pay back across the entire pregnancy.
Continue with STI Screening for Sexually Active Adolescents with a Cervix and IUDs and STI Screening: What to Know for the directly connected guidance.
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Chlamydia and gonorrhea NAAT. Treatable now, threatening preterm birth and newborn infection later.
Syphilis serology with titers documented. Congenital syphilis prevention starts here, not at the first prenatal visit.
HIV antigen/antibody. Status known with suppression planned before conception.
Hepatitis B panel (surface antigen, surface antibody, core antibody). Susceptibility means vaccinate now; infection means stage and plan.
Hepatitis C screen. Treatable pre-pregnancy with modern antivirals.
Rubella and varicella immunity. Live vaccines given only pre-pregnancy.
Cervical screening currency. Precancer management completes before pregnancy complicates it.
TB risk assessment where relevant.
Partner protocol without gaps
Simultaneous testing and treatment for both partners. Maternal clearance means nothing beside an untreated partner who reinfects mid-pregnancy (the worst timing, when treatment options narrow and fetal stakes peak).
Abstinence through clearance, retesting confirmation documenting cure, and conception timing after verified cure rather than assumed cure.
Joint planning visits make this routine rather than awkward.
Vaccine and health optimization alongside
Rubella and varicella vaccination pre-pregnancy only (live vaccines contraindicated in pregnancy).
Hepatitis B series completion.
Flu, COVID, and Tdap per season and pregnancy timing. Folic acid started pre-conception (neural tube protection needs pre-pregnancy levels).
Chronic-disease control optimized (diabetes, hypertension, thyroid. All pregnancy-relevant).
Medication safety review swapping teratogenic drugs for pregnancy-compatible alternatives before conception attempts.
Timeline planning that prevents rushing
Complete workups three or more months before conception attempts. Treatment plus retest buffers need calendar space.
Urgent issues (active infections, immunity gaps) first.
Elective optimizations (weight, fitness, dental, mental health) alongside.
Unhurried preparation outperforms rushed conception on every outcome measured, and the planning period doubles as relationship preparation for parenthood’s demands.
When to seek care
For preconception visits bundling everything above (ask for one explicitly. Many practices offer dedicated preconception appointments), with positive findings (treat-then-retry sequencing, never conceive-then-treat), and at the first prenatal visit confirming sustained clearance from the planning phase.