GI Function Unit

GI Function Unit

The GI Function Unit located on at our Hotel Dieu Hospital site.

Patients must first register at the Jeanne Mance 4 registration desk. To locate the registration desk, enter the main entrance of the Hotel Dieu Hospital site off Brock Street and take the main lobby elevators up to level 4. When you get off the elevators, a sign will direct you to the registration desk. After you have registered, you will need to proceed to the Room 473 in the Johnson Wing. When you leave the registration desk, take a left and then a right.

As part of our Gastroenterology Clinic, we provide the following services:


  • 13C Urea Breath Test – bacterial infection Helicobacter pylori *Feb 2023 - please note we are currently not accepting referrals for 13C Urea Breath Test
  • Lactose Tolerance Breath Test
  • Glucose Hydrogen Breath Testing-Bacterial Overgrowth
  • 72 Hour Fecal Fat Test
  • Fecal Weight

*referrals are restricted to Surgery, Medicine, Pediatrics and Gastroenterology. Referral forms can be obtained from the GI Function Unit

  • 24 Hr pH Study
  • Esophageal Manometry
  • Anorectal Manometry
  • Video Capsule Endoscopy – Small Bowel


To access our care and support services testing, patients require a referral from their family doctor or another health care professional. If you are a health care professional, you can access our testing referral form here.

Feb 2023: Please note we are currently not accepting referrals for 13C Urea Breath Test

Our laboratories received accredited status in 2020.  Our laboratory license is issued by the Ministry of Health and Long Term Care.

You can contact us at 613-544-3400, extension 2417.