Average risk
For average-risk adults, colon cancer screening is now recommended starting at age 45 (previously 50). Options include colonoscopy, the FIT (Fecal Immunochemical Test) done annually, and CT colonography.
Higher risk
If you have a first-degree relative with colon cancer or advanced polyps, screening usually starts earlier — age 40 or 10 years before the youngest relative's diagnosis, whichever comes first.
Which test is right for me?
- Colonoscopy: gold standard — detects AND removes polyps in one visit
- FIT: simple, at-home, annual; positive tests always need colonoscopy follow-up
- CT colonography: imaging-based alternative when colonoscopy isn't feasible; abnormal findings require follow-up colonoscopy
The best screening test is the one you'll actually do. We can help you decide together based on your history and preferences.