The American Cancer Society 2018 guideline for colorectal cancer screening recommends that average-risk adults aged 45 years and older undergo regular screening with either a high-sensitivity stool-based test or a structural (visual) exam, based on personal preferences and test availability. As a part of the screening process, all positive results on non-colonoscopy screening tests should be followed up with timely colonoscopy. Full text of current ACS recommendations (and rationale) for screening for the early detection of colorectal cancer is available here.
View the American Cancer Society 2018 Colorectal Cancer Screening Guidelines