Colon Cancer Screening Kits Available: Occult Blood Test (iFOBT). Colon cancer - the second most deadly #cancer in the United States - is highly curable if caught early, statistics show. One way to test for colorectal cancer is to look for occult (hidden) blood in stool. The idea behind this type of test is that blood vessels in larger colorectal polyps or cancers are often fragile and easily damaged by the passage of stool. The damaged vessels usually bleed into the colon or rectum, but only rarely is there enough bleeding for blood to be seen in the stool. The American Cancer Society recommends screening for colon cancer between the ages of 45 and 75. Screening annually is usually recommended if an occult blood test is used. Order fast and convenient lab testing online at https://www.accureference.com/laboratory-test-directory/o/occult-blood-fecal-ifobt/ https://www.cancer.org/cancer/colon-rectal-cancer/detection-diagnosis-staging/screening-tests-used.html