Diagnostic services

Person receiving xray of hand

Markham Stouffville Hospital is committed to providing the communities of Markham, Stouffville and Uxbridge with high quality, patient-centered health care. To help you maximize your health in diagnostic imaging, cardio respiratory and electro diagnostic care, we have invested in a progressive range of leading diagnostic services at both of our locations.

Diagnostic services at Markham Stouffville Hospital has expanded to become one of the best equipped diagnostic service departments in Ontario with state-of-the-art equipment and advanced technology and procedures for improved patient safety and care. Diagnostic services at Markham Stouffville Hospital can serve all of the medical, surgical and obstetrical needs of the community and satisfy the needs of all specialties and testing.


A physician referral is required to make an appointment for all procedures and testing in diagnostic services. All services are covered by OHIP; except the ambulatory blood pressure monitor test.

If you would like to reschedule, cancel or confirm your appointment at the Markham site, please call the scheduling centre at: 905-472-7020. If you would like to reschedule, cancel or confirm your appointment at the Uxbridge site, please call 905 852 9771 ext. 5249. If you have any other questions about bookings please call the manager of patient scheduling at: 905- 472 7373 ext. 6502.

For information about obtaining copies of your test images visit our page on requesting your personal health information.

When you arrive

For all visits to diagnostic services we ask patients to consider:

  • The hospital is a scent-free zone- please do not wear perfume or cologne on the day of your visit ensure you are informed of any necessary preparation instructions for your specific procedure. Please arrive with sufficient time to complete the registration process 15 minutes before your scheduled procedure. For patients having MRI, you need to have registered and arrived at the MRI waiting room 30 minutes before your booked scan time, in order to complete some additional screening questions and preparations.  Please always bring your health card with you when coming to the hospital as a patient.
  • Once registered please make your way directly to the sub-waiting area for the service you need.  Stopping for refreshments may result in your missing your appointment time and being rescheduled. Additionally, keeping refreshments away from the common waiting rooms is greatly appreciated by the other patients who are on food/beverage restrictions before starting their examinations.

  • The hospital environment is subject to many situations which may increase waiting times once you arrive. Be prepared for possibly longer than expected wait times before your appointment. Wifi is available.

  • Having someone accompany you for additional care or support, especially if you have been advised you may be given sedation during your visit and should not be driving yourself home.

  • Telling us in advance if we could improve your experience by planning for accessibility or translation service support.

  • Telling us about your visit at the hospital.  We aim to make your patient experience a great one!

Patient safety in diagnostic, cardio respiratory and electrodiagnostic services

Patient safety and quality care is a top priority at Markham Stouffville Hospital and in diagnostic and cardio respiratory services. Advancements have been made in radiation and medicine dose safety to ensure that diagnostic imaging tests and procedures are using the minimal amount of ionizing radiation and medication necessary to obtain images and diagnosis.

The state-of-the-art equipment in the Markham Stouffville Hospital Diagnostic Services department supports Choosing Wisely and reduces radiation doses to minimize patient exposure to radiation. The amount of ionizing radiation used in most diagnostic imaging exams is very small and the benefits greatly outweigh the risks.

We also recommend that you keep track of the diagnostic services you have had. You can do so with the My medical imaging history

If you are travelling soon after you have had a nuclear medicine test, please let the technologist know as you may benefit from having a travelling letter on hand.

To learn more about radiation safety and dose reduction, please view our radiation safety brochure.


Certain procedures may require specific preparation prior to your arrival at the hospital. Preparation may include: not eating or drinking before your appointment, avoiding caffeine products or reducing/stopping medication intake, such as inhalers or beta blockers. Caffeine products include: coffee and tea (decaffeinated and caffeinated), chocolate, cocoa, pop, energy drinks and any medication or supplements that may contain caffeine.

Necessary planning for each test or procedure is also outlined in the Patient preparation instruction sheet. If you do not see the specific exam you will be having please click on the left side of this page on the test or procedure you are scheduled for to view the brochures with more details and specific preparation instructions.

Please do not wear perfume for any tests or procedures as the hospital is a scent-free environment. Please also do not wear jewellery on the day of your test as you may have to remove it. Please note that cell phone reception may be limited in some hospital areas. Please keep cell phones turned off or on vibrate while inside an exam room having your procedure.