OverviewThere are 4 basic tests for colon cancer: a stool test (to check for blood), sigmoidoscopy (inspection of the lower colon), colonoscopy (inspection of the entire colon), and double contrast barium enema. All 4 are effective in catching cancers in the early stages, when treatment is most beneficial.
Review Date 5/21/2017
Updated by: Laura J. Martin, MD, MPH, ABIM Board Certified in Internal Medicine and Hospice and Palliative Medicine, Atlanta, GA. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.