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The laboratory at Markham Stouffville Hospital only provides services to patients actively receiving treatment at the hospital, including the following:

Markham Site

  • Clinics (Surgical Assessment, Diabetes, Chemotherapy, Outpatient Mental Health, Day Hospital Geriatric, General internal Medicine Clinic)
  • Newborns delivered at Markham Stouffville Hospital
  • Pre-natal patients who are Rh negative
  • Inpatients

Uxbridge Site

  • Clinics (Diabetes, Paediatric, Endoscopy, Urology, General Surgery)
  • Emergency Department patients
  • Newborns delivered at Markham Stouffville Hospital
  • Inpatients


Clinic patients included in this list do not need appointments and will be served on a first come, first served basis. Markham site hours are Monday to Friday from 8 a.m. to 3:30 p.m.

What You Should Know

Community members who are not actively receiving treatment at the hospital, with requisitions from their physician’s offices or other health-care institutions, can visit one of our community’s lab service providers listed below. Community laboratory services are funded by the Ontario Health Insurance Plan (OHIP) and, with the exception of tests not covered by OHIP, you will not incur additional costs for testing at these labs.

Markham and Witchurch-Stouffville

CML Labs
6633 Highway 7, Suite 1

34 Civic Avenue, 3rd floor

Gamma Dynacare Labs
110 Copper Creek Drive

10 Unionville Gate Road, Suites 203 and 302

377 Church Street, Suite G05

5293 Highway 7, Suite 203


CML Labs
29 Toronto Street N., Suite 105