1. Skip to Menu
  2. Skip to Content
  3. Skip to Footer>
     The CMLTO is operating virtually with the office located at 25 Adelaide Street East closed to the public until
     further notice. Click here for more information about contacting the CMLTO by email or postal mail.
    During the COVID-19 pandemic, healthcare organizations have increasingly become targets of cyberattacks.
    If you receive an email that appears to come from the CMLTO but seems suspicious, or if you are unsure
    about its legitimacy, please email communications@cmlto.com for clarification.
Find an MLT Member login



The CMLTO Voluntary Roster of Registered Medical Laboratory Technicians
Click here to apply.
Learn more about the Voluntary Roster initiative by clicking here

Click here to search the Voluntary Roster.


Voluntary roster image
Help CMLTO improve this website by taking a quick visitor survey. Thank you!

Take our visitor survey

Call for Non-Council Committee Members

19 October 2020

The CMLTO is calling for practising members in good standing to apply to serve on its statutory committees. The Regulated Health Professions Act, 1991 (RHPA) stipulates the specific functions of the CMLTO’s Committees. Committees include professional and public Council Members and non-Council professional members. Learn more about the Committee mandates here.

To apply, please email This e-mail address is being protected from spambots. You need JavaScript enabled to view it stating your interest and attaching your resume, by 4:30 pm, on October 30, 2020.

CMLTO launches consultation: Voluntary Roster criteria

02 October 2020

Since the inception of the CMLTO Voluntary Roster of Registered Medical Laboratory Technicians (“the Voluntary Roster”), the CMLTO has published the minimum criteria for medical laboratory assistants and technicians to be included on the Voluntary Roster. These criteria were introduced in 2015 and updated in 2018. CMLTO reviews the Voluntary Roster criteria annually with the intent of evolving them to mirror the MLT registration requirements.

Stakeholders are invited to comment on the proposed amendments to the CMLTO Voluntary Roster criteria, which were approved by Council at its September meeting. Learn more by clicking here.

CMLTO Transfusion Science Guideline rescinded

29 September 2020

On August 14, 2020, based on feedback received from Practising MLTs, the CMLTO Quality Assurance Committee passed a motion to rescind the CMLTO Guidelines for Medical Laboratory Technologists Practising in Transfusion Science. The CMLTO Guidelines for Medical Laboratory Technologists Practising in Transfusion Science are no longer available. If you require any further information or confidential practice advice, please contact the Quality Assurance Program at This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

image of medical laboratory technologist at microscope











qap_symbol_and_notice