colonoscopy procedure how long does it take
The Colonoscopy. The procedure itself can be as short as 15 minutes or can take up to an hour, depending on what your doctor finds. A clear, clean colon with no growth or polyps can be examined quickly.In other cases, the doctor may need to remove polyps or take tissue samples for further testing.he procedure really begins 24 hours prior to the colonoscopy, when you need to begin preparing for it. Your doctor will prescribe a laxative to empty out the digestive tract.