Should someone get a fobt or colonoscopy?

No: None of the screening tests for serum tumor markers or fecal occult blood are that accurate. At least with colonoscopy every few years there is direct visualization of the bowel to define the absence or presence of a tumor or polypoid lesion. A new diagnostic fecal tumor protein test is being developed that will define the amt. of tumor protein or not present and if neg. the bowel is neg.