The University Health Network's Laboratory Medicine Program impacts nearly every patient that goes through Toronto General, Toronto Western, Toronto Rehab, and Princess Margaret Hospitals. Our clinical laboratory services provide physicians with the necessary information to effectively diagnose and treat patients, ultimately saving lives.

We are the largest hospital diagnostic lab in Canada and one of the largest academic labs in the world, performing 25 million tests per year and serving 1,300 patients per day. We've approached pathology and clinical testing with an early adopter attitude, taking advantage of technological advancements and progressing with changes in global healthcare.

Complementing our facilities is over 700 committed staff, who provide the highest quality of services, making our program a continued success. We are always looking to expand, improve, and collaborate, harmonizing clinical and administrative viewpoints in achieving shared goals.

Our Mission is to advance laboratory science through research, education and exemplary service.

Our Vision is to be global leaders in laboratory medicine.

Our Values are

  • Providing the highest quality care for our patients, and enhancing the patient experience through dedicated practice.
  • Improving laboratory diagnostics throughout Canada and sharing our expertise.
  • Ensuring staff maintain and enjoy a safe work environment that presents regular opportunities for collaboration, advancement and professional growth.
  • Promoting continuous improvement in all staff, and advocating regular training and education for new processes and systems.
  • Maintaining clear and consistent communication within our department and with our colleagues and patients.
  • Fostering meaningful laboratory reform that benefits all.

  • Clinical Disciplines & Services

    We also offer a wide range of services for healthcare professionals, including ad hoc reference testing, consultation services and validation services. Our services are supported by the largest diagnostic lab in Canada, a leading-edge laboratory information system and a 24/7 call centre.

    We support all of the UHN enterprises and their respective clinical programs, but beyond that we play a key role in supporting 17 hospital partners that reach across Ontario through an extension of LMP into rural and remote areas, ensuring access to best-in-class lab services, and improving patient safety.


    As one of the largest academic laboratories in the world, we contribute many hours of teaching to University of Toronto undergraduate, graduate and fellowships, as well as to medical laboratory students at the Michener Institute for Applied Health Sciences and University of Ontario Institute of Technology.

    Learn more about education in LMP.


    We are continuously focused on ways to innovate, piloting game-changing technologies like Bionano's Saphyr Optical Genome Mapping Instrumentation, to rapidly identify genome variation like never before.

    All members of our team are involved with research projects, the development of new laboratory medicine tests and services and translating research into clinical practice.

    Learn more about research and innovation in LMP.

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