At present, colonoscopy is the standard method to detect and diagnose CRC. Colonoscopy does have limitations, the uptake by patients is very low because the bowel preparation process and the procedure itself are unpleasant for patients. While minimal, this is an invasive procedure and is not without risk.
Stool tests for occult blood
As an alternative procedure to colonoscopy, stool tests for detecting occult blood in stools have become established. Here there is a difference between conventional chemical tests (gFOBT) and the new and significantly more conclusive immunochemical tests
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