Sometimes, the preparation solution to clear the bowels before a colonoscopy does not work, or only partially works. A person can speak with their doctor about ways to make the prep more effective.

New guidelines introduce quality indicators like bowel preparation adequacy and sessile serrated lesion detection rates for colonoscopy. The adenoma detection rate (ADR) threshold increased from 30% ...

To prepare for a colonoscopy, you may need to avoid fiber in the days leading up to your appointment and follow a clear liquid diet beginning the day before. Preparation also involves taking laxatives ...