Scopes of Practice > Medical Laboratory Technologists



Scope of Practice from Individual Acts

The practice of medical laboratory technology is the performance of laboratory investigations on the human body or on specimens taken from the human body and the evaluation of the technical sufficiency of the investigations and their results.



Alternate / Additional Description of Scope

Medical laboratory technologists:

  • examine body fluids and tissues for abnormal chemical levels, cells or bacteria
  • prepare tissue for microscopic examination by pathologists
  • determine blood type for transfusions
  • conduct medical research and analyses
  • participate in quality assurance and quality control activities.


Summarized Controlled Acts

Performing a procedure on tissue below the dermis (partial)



Authorized Acts

4. In the course of engaging in the practice of medical laboratory technology, a member is authorized, subject to the terms, conditions and limitations imposed on his or her certificate of registration, to take blood samples from veins or by skin pricking. 1991, c. 28, s. 4.

Additional requirements for authorized acts 

5.1 A member shall not perform a procedure under the authority of section 4 unless the procedure is ordered by a member of the College of Physicians and Surgeons of Ontario or the Royal College of Dental Surgeons of Ontario or by a prescribed person. 1991, c. 28, s. 5 (1); 1997, c. 9, s. 5.