How long does an ordinary colonoscopy take?

General colonoscopy time needs to be judged according to the patient's cooperation degree and intestinal conditions.

If there is no abnormal lesion in the patient's intestine, the patient is more cooperative throughout the whole process, and the examination can be completed in about 10 minutes to 20 minutes. If there is abnormal hyperplasia in the patient's intestine, it is necessary to take part of the tissue for biopsy; or if the patient has intestinal adhesions, it may lead to prolonged examination time, which may take half an hour or even an hour.

It is necessary to maintain an empty stomach before colonoscopy to facilitate the doctor to observe the intestinal conditions. After colonoscopy, it is not advisable to eat spicy, cold and irritating foods.