If you are 50-75 years old: Consider Fecal Occult blood testing every year; You can also use Sigmoidoscopy or colonoscopy.
If you are 76 – 85: Do not Screen routinely; Talk to your doctor if you have risk factors.
Older than 85: Do not Screen.
Digital Rectal Examination is not a screening method. I have patients who asked me for digital rectal exams for colorectal cancer screening. As you can guess, I declined.
Colonoscopy: Every 10 years starting at age 50 years of age. CT colonography every 5 years
Do not repeat Colorectal Cancer Screening for 10 years that does not detect cancer.