Colonoscopy uses a thin, flexible tube with a miniature video camera at the tip to safely investigate conditions associated with the large intestine (colon) and rectum. These may include concerns such as blood in the stool, abdominal pain, bowel problems, or abnormalities found in an imaging. Colonoscopy is also used for the preventative screening typically prescribed for adults around the age of 50.

Colonoscopy is a key to early detection of serious illnesses like colorectal cancer. The Canadian Task Force on Preventative Health Care estimates that 17,000 cases of colorectal cancer occur each year, resulting in approximately 6,500 deaths annually. The task force recommends screening through colonoscopy as a preventative measure.


At North York Endoscopy Centre, colonoscopies include propofol anesthesia given by a qualified anesthetist working with an experienced endoscopist, making the procedure safe and completely painless. We welcome patients who may have been reluctant to undergo screening due to fear of possible discomfort. You can be assured of comfortable, private surroundings and the most up-to-date technology.

Before the beginning of the colonoscopy, you will receive an intravenous sedative or anesthesia to ensure your comfort and minimize any potential discomfort. While lying in a comfortable position, the colonoscope is gently inserted into the rectum and gradually advanced through the colon. Once fully inserted, the instrument is carefully withdrawn. If polyps are detected, the physician may remove them, or a small tissue sample (biopsy) may be taken from the colon lining for further microscopic examination.

Following your procedure, we will keep you under observation until the effects of the sedative/anesthesia have worn off.


Before your colonoscopy appointment, please be sure to read the
information sheet with full details. Click below to view instructions.

Download Instructions

Because you will receive sedation as part of the colonoscopy, you may not drive or operate machinery for the rest of the day. You must arrange for another adult to take you home after your procedure.You can expect to be at the clinic for a total of 2 ½ to 3 ½ hours.

Stop taking any ASA, blood thinning or iron medication 5 days before your procedure. For other medications, please check with your doctor.

The day before your procedure, do not eat anything and drink clear liquids only. Clear liquids include strained fruit juices with no pulp (apple, white grape), Gatorade, lemonade, Popsicles, and ice. Do not eat or drink after midnight.

Before the day of your procedure, you will need to obtain 4 litres of Peglyte mix from your local pharmacy. Prepare the solution by mixing the Peglyte with water according to package instructions.

  • Starting at 6:00 pm the evening before your colonoscopy, drink one 250 ml (8 ounce) glass of the Peglyte solution every 15 minutes, taking 8 glasses in all for a total of 2 litres.
  • Wake up at 6:00 am the morning of your procedure and drink the remaining 8 glasses (2 litres) of Peglyte solution before 8 a.m.

Patient Forms

Once you have an appointment for a procedure at North York Endoscopy Clinic, please download and print out all the forms below. Fill out the information requested and bring the completed forms with you to your appointment.

Patient Forms
Consent Form Download Form
Patient Forms
COVID Screening Form Download Form
Patient Forms
Medical Information Form Download Form
Patient Forms
Patient Waiver Form Download Form