416.749.9444 [email protected]

FAQs & Resources


Frequently Asked Questions

Do I need to prepare for the test?
Yes. The bowels must be cleaned out prior to the examination. For detailed instructions, click here.

Does the test hurt?
You will be comfortable during the procedure. You are sedated prior to the test, most patients sleep through the procedure.

Do I need time off work?
Yes. The day prior to your procedure you will need to prepare your bowel and you will spend a lot of time in the washroom. You may need to take this day off work. The day of your procedure you will be sedated, and you will need to take this day off work as well. Your Ontario Colonoscopy Clinics’ doctor will be happy to provide you with a note for your employer.

Are there any risks with the test?
Colonoscopy is a very safe procedure but as with any invasive test, there are some risk. A perforation or hole in the bowel is made in less than 1 in 3000 cases. If this occurs, surgery may
be required to repair the bowel. The likelihood of detecting a large colon polyp or a colon cancer is much higher than the chance of a perforation.

How long is the test?
The procedure itself last 15 – 20 minutes. You need to arrive 30 minutes before the procedure to register, and you will be monitored for 30 minutes after the procedure while the sedation
wears offs.

Can I drive?
No. You will need to arrange for a ride home.


Related links

Canadian Cancer Society

Cancer Care Ontario

Screening Initiative

Colon Cancer Canada Colorectal Cancer Association of Canada

Colon Cancer Check