What to know about the FDA-approved blood test for colon cancer detection CBS NewsF.D.A. Approves Blood Test for Colon Cancer Detection The New York TimesDC-area cancer doctor hopes FDA action will save more lives of people with colon cancer WTOPIn a big step for liquid biopsy, FDA approves a blood screening test for colorectal cancer STATWill a new colon cancer blood test replace your colonoscopy? National Geographic