Colonoscopy




What you need to know

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Preparing for your visit

By following these important tips, you will arrive prepared for your procedure. Learn More

Preparing for your visit

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Tips for preparing for your colonoscopy

By following these important tips, you will arrive prepared for your colonoscopy at Kensington Screening Clinic.


Tip #1: Submit your patient questionnaire

Please make sure to submit your Department of Anesthesia Pre-operative patient questionnaire at least 5 days prior to your procedure.

Department of Anesthesia: Patient Questionnaire:


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Tip #2: Confirm your appointment

If your appointment was booked through a gastroenterologist please call their office directly.

If your appointment was booked through Kensington Screening Clinic, please call us at 416-928-9511 to confirm arrival time.


Cancellation fees: Please note that there are appointment cancellation fees for colonoscopy and gastroscopy procedures: You are required to contact us by phone 416-928-9511, ext. 4 or email (endoscopy@kensingtonhealth.org to cancel you appointment). To reschedule you will be required to contact the office by phone.

Cancellation fees: 

  • Less than 8 days’ notice / no notice - $250

  • Cancellation and Rebooking Fee - $50

Tip #3: Your prep

You must begin preparing for your procedure four days in advance. Your doctor will provide you with the right preparation information and you must follow the bowel preparation instructions carefully.

What to eat before your colonoscopy:

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Tip #4: Make sure you have everything you need

We recommend you follow this checklist so you have everything you need before your appointment:

  • Arrive 45 minutes before your scheduled appointment time
  • Bring a valid OHIP card and photo ID. If you do not have this with you the colonoscopy will be cancelled.
  • If you receive sedation, you must have someone to pick you up directly at the clinic and accompany you home after the procedure. Your procedure will be cancelled if arrangements for someone to accompany you home are not made (a suitable pickup does not include taxi services and/or Wheel-Trans).
  • Bring a list of all your medications, or all of your medications in their appropriate bottles
  • If you do not speak English, please bring a family member to translate for you.
  • Leave any valuables at home
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During your visit

We make it a priority to ensure that you are at ease during your procedure. Learn More

During your visit

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What happens during a colonoscopy?

A colonoscopy test involves inserting a video camera through the rectum on a long flexible tube. The doctor will examine the lining of the bowel, perform any necessary biopsies or polyp removal, and then slowly withdraw the tube. For the tube to pass easily, air is introduced into the bowl. To minimize discomfort during this process, we offer sedation.


How long will the procedure take?

The test itself usually only takes 20-40 minutes in total but you should allow for two hours at your appointment for admission, procedure and recovery.


Please note that on occasion, due to unforeseen circumstances, procedure time may be extended or delayed. We apologize for the potential inconvenience.

What can you expect after your colonoscopy? After the procedure, you may feel bloated or have some cramping. Due to the sedation, your judgment and reflexes may be impaired for the rest of the day.

  • For your own safety, you cannot drive or operate heavy machinery for 24 hours after the procedure.
  • Although the procedure takes about 20-40 minutes, you will be at the Kensington Screening Clinic for approximately two hours to ensure proper recovery


What happens if a polyp is found?

A colon polyp is a small clump of cells that forms on the lining of the colon. Most colon polyps are harmless. In some cases, a colon polyp can develop into colon cancer. Most can be removed during the procedure.

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After your visit

Once the exam is complete, your doctor will discuss your results. Learn More

After your visit

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Your doctor will discuss your results with you after your procedure. 

A copy of your results will also be faxed to your family doctor the same day of your appointment.

If a biopsy is taken, your doctor will discuss your follow-up appointment.

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At Kensington Screening Clinic, we will do everything to make sure your colonoscopy is as comfortable as possible.


What is the function of the colon?

The large intestine, commonly known as the colon, is part of your digestive system. It’s responsible for absorbing water from indigestible food matter and passing waste material from the body.

Maintaining a healthy lifestyle through diet and exercise is important for colon health. A number of diseases can affect colon health, such as polyps, ulcerative colitis, irritable bowel syndrome and cancer.


What is a colonoscopy?

A colonoscopy is a test used to examine the lining of the large intestine (colon) and, if necessary, to take biopsy specimens (tiny bits of tissue) or remove polyps (abnormal growths). At the Screening Clinic, we can detect and remove polyps before they become cancerous.


What is a polyp?

A polyp is a protrusion from the lining of the bowel caused by abnormal cells. Some polyps look like a grape and are attached to the intestinal wall by a stalk. Some are flat, and are attached directly onto the intestinal wall without a stalk. If polyps are found they usually are removed for testing. Removal of a polyp is known as a Polypectomy.


What are the benefits of having a colonoscopy?

Colorectal cancer is preventable with early detection. It is the third most common cause of cancer-related death for both men and women. However, if caught early, colorectal cancer has a 90% survival rate.


Who should have a colonoscopy?

There are new screening guidelines for colon cancer in Ontario. It’s important to speak with your doctor about the importance of cancer screening.

Visit the Colon Cancer Check program to learn more about colorectal screening guidelines for patients with average and increased risk.