Hepatitis testing is one area where Missouri genuinely holds its own nationally, and that relative strength is worth naming before anything else, because it shapes how you think about the rest of the state's testing picture. Where Missouri struggles is in bacterial STIs, and the contrast between those two standings is sharper than most Midwesterners expect. The spread isn't uniform across infection types, which means knowing *which* test you actually need matters here more than a single "get tested" prompt would suggest. Geography is the bigger story, though.
Missouri has over three thousand municipalities, but primary-care access hasn't kept pace with that spread: nearly every county in the state, all but a handful, has been identified by the federal government as medically underserved for primary care. That's not a rural abstraction. It means someone an hour outside Kansas City or Springfield can face real logistical friction getting to a provider, while someone inside St. Louis or Columbia has clinics within a short drive.
The statewide network of public and community clinics is substantial, but it's distributed unevenly, so where you live in Missouri quietly determines how easy or hard testing is to act on. Missouri's young-adult population is a meaningful share of residents, and that age group carries the highest STI transmission rates nationally, so the access gaps above fall hardest on exactly the people most likely to benefit from regular screening.