DNA stool test for colon cancer — Mayo Clinic June 02, 2009 Overview Show transcript Overview Research shows that screening for colorectal cancer saves lives. That's because screening can catch cancer early, while it's still curable. But let's face it, having a colonoscopy to look for cancer or precancerous polyps is not fun. Doctors at Mayo Clinic have studied and improved upon a noninvasive screening test that requires no preparation or procedure. The test detects cancer or precancerous polyps by measuring DNA in your stool. Receive Mayo Clinic news in your inbox. Sign up Related ContentArticleComprehensive colorectal screening for closing the gap in racial disparitiesArticleImproving implementation of best practice guidelines for colorectal cancer screeningArticleExamining Alaska Native peoples' perspectives about options for colorectal cancer screening VID-20440000 Medical Professionals DNA stool test for colon cancer — Mayo Clinic