The Screenings That Change at 45

Colorectal screening options

Starting at 45, average-risk adults should screen for colorectal cancer and continue through age 75. Options include a colonoscopy about every ten years, a fecal immunochemical test each year, or other approved stool or visual tests on specific schedules. The best test is the one you will actually complete.

For adults ages 76 to 85, screening is an individual decision based on overall health, prior screening, and life expectancy. Screening is not recommended after 85.

Coverage and logistics

Most commercial plans cover specified preventive screening without cost sharing when eligibility, network, method, frequency, and coding conditions are met. That means the screening test itself is often $0 when eligible and in network, but only if the claim is coded correctly and the frequency rules are met. Verify with your plan before scheduling.

For applicable non-grandfathered private plans, federal guidance treats polyp removal, anesthesia, pathology, and a follow-up colonoscopy after a positive stool test as integral parts of preventive colorectal screening without cost sharing. Medicare follows separate rules, and other plan conditions can still differ, so verify the benefit that applies to you.

What this does not mean

A normal colonoscopy at 45 is not a lifetime pass; it is a ten-year reprieve for most average-risk adults. A positive stool test does not mean you have cancer; it means you need a follow-up colonoscopy to look closer.

Starting screening also does not mean you should ignore symptoms. Rectal bleeding, persistent changes in bowel habits, unexplained weight loss, or iron-deficiency anemia should be evaluated promptly regardless of your screening schedule. Sources checked July 20, 2026. Independent clinician review is pending.

Questions to bring to a visit

Ask which colorectal test fits your risk, schedule, and anxiety level. Ask how often it needs repeating, what a positive result triggers, and whether your plan covers both the screening test and any follow-up.

• Which test is the best fit for me: stool-based or colonoscopy?
• How often do I need to repeat it?
• Does my plan follow the federal preventive-coverage rules for polyp removal and follow-up colonoscopy?