Colorectal cancer almost always develops from precancerous polyps (abnormal growths) in the colon or rectum. Screening testsScreening tests can find precancerous polyps, so that they can be removed before they turn into cancer. Screening tests can also find colorectal cancer early, when treatment works best.
Regular screening, beginning at age 50, is the key to preventing colorectal cancer. The U.S. Preventive Services Task Force (USPSTF) recommends screening for colorectal cancer using high-sensitivity fecal occult blood testing, sigmoidoscopy, or colonoscopy beginning at age 50 years and continuing until age 75 years.
You should begin screening for colorectal cancer soon after turning 50, then continue getting screened at regular intervals. However, you may need to be tested earlier than 50 or more often than other people if—
Speak with your doctor about when you should begin screening and how often you should be tested.
Where feasible, the 25 states and 4 tribes25 states and 4 tribes in CDC's Colorectal Cancer Control ProgramColorectal Cancer Control Program provide colorectal cancer screening and follow-up care to low-income men and women aged 50–64 years who are underinsured or uninsured for screening, when resources are available and there is no other payment option.
Colorectal cancer screening tests may be covered by your health insurance policy without a deductible or co-pay.