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About Lab Tests

The results of lab tests provide information that is vital to the diagnosis and treatment of everything from high cholesterol to cancer. You can have confidence in these tests because they’re performed by registered members of the College of Medical Laboratory Technologists of Ontario (CMLTO).

Learn more about why tests should be conducted by regulated health professionals, and find the answers to some common questions. You can also find a lab, and let us know about any concerns about your tests.


image of blood sample prepared for examination under a microscope