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CMLTO Board officers for 2022

06 January 2022

At its December meeting, the Board also appointed its Officers for 2022 and their terms take effect on January 1, 2022.
Chair – Tammy Earle
Vice-Chair, Professional – Karen Persad
Vice-Chair, Public – Walter Hewus.

CMLTO holiday operating hours

17 December 2021

Dec 24, 2021: 8:30 am - noon
Dec 27, 2021: Closed
Dec 28, 2021: Closed
Dec 29, 2021: 8:30 am – 4:30 pm
Dec 30, 2021: 8:30 am – 4:30 pm
Dec 31, 2021: 8:30 am – noon
Jan 3, 2022: Closed

Approved refresher courses lists updated

05 December 2021

The CMLTO publishes lists of approved refresher courses for MLTs. Refresher course hours may be required for a person applying for a Practising class of registration certificate who cannot demonstrate active engagement, or for a Non-practising member who wishes to change class to Practising.

Click here for more information.

New Professional Practice Guideline available

20 November 2021

Guidelines for evaluating professional practice activities
Professional Practice staff launched a new practice resource (PDF) for registrants and other laboratory stakeholders to assist them in answering the question: “Can I or am I allowed to do this activity?”
The guideline:
  • uses a 4-step framework to break down complex concepts into actionable processes
  • prompts stakeholders to ask important questions
  • contains an appendix that provides specific examples.
Interested in learning more? Join our webinar on January 27, 2022, from 12:00 – 12:45 pm where Professional Practice staff will provide an overview of the guideline and provide examples of applying it within MLT practice. For those who cannot attend the live session, the webinar will be recorded and posted on the CMLTO website. Click here to register for the live event.

MLT survey

17 November 2021

The Centre for Canadian Language Benchmarks (CCLB) is undertaking a review of occupational language benchmarks on behalf of the Canadian Alliance of Medical Laboratory Professionals Regulators (CAMLPR). All Canadian-certified medical laboratory technologists currently working as MLTs are invited to complete a short survey to share how they use their English language skills at work. 

Please complete the survey by Friday, November 26, 2021. This survey should take approximately 15 minutes to complete. Please complete the survey only once.

Survey findings will be explored in more detail through one-to-one interviews with MLTs from across Canada.

If you have questions, you may email CAMLPR at mltgateway@camlpr.org.

English Survey link: https://forms.office.com/r/CrMuV9X0Gf

Lien du sondage (français) : https://forms.office.com/r/0JCU84KAGT

Thank you in advance for your participation.

CMLTO 2020 Annual Report released

02 November 2021

The CMLTO is pleased to announce the publication of the 2020 Annual Report in English (PDF) and in French (PDF). The report illustrates the CMLTO's key accomplishments in fulfilling its mission/mandate to protect the public's right to safe, high-quality health care through self-regulation and leadership of the medical laboratory technology profession. CMLTO Annual Reports are located online here.

Registration renewal for 2022 has begun

01 November 2021


The CMLTO's Annual Registration Renewal for 2022 begins November 1, 2020. All medical laboratory technologists registered in Ontario must renew their CMLTO registration online by December 31, 2021.

The Annual Registration Renewal notice, which includes renewal instructions, was sent by postal mail in the third week of October. Members can get started by logging into CMLTO online services or by clicking the red button above.

If you have questions, please call 416-861-9605 and press 1 for Registration and Renewal, or email registration@cmlto.com

CMLTO closed on October 11, 2021

08 October 2021

The CMLTO will be closed for the statutory Thanksgiving holiday on October 11, 2021. Regular hours resume at 8:30 am on October 12th.

Registration renewal begins November 1, 2021

01 October 2021

The CMLTO's Annual Registration Renewal for 2022 begins on November 1, 2021. All medical laboratory technologists registered in Ontario must renew their CMLTO registration online by December 31, 2021.

The Annual Registration Renewal notice, which includes renewal instructions, will be sent by postal mail in the third week of October. It is a professional obligation to ensure that the CMLTO has your correct contact information. Registrants can update their profiles by logging into

CMLTO Board of Directors announces new Registrar & CEO

30 September 2021

From Tammy Earle, MLT
Chair, CMLTO Board of Directors

On behalf of the CMLTO Board of Directors, I am pleased to announce the appointment of John Tzountzouris as the new CMLTO Registrar & CEO. John’s tenure begins on October 4, 2021.

John has worked at the CMLTO since 2009, beginning as Senior Policy & Knowledge Management Specialist, and most recently as Director, Registration & Professional Practice since 2017.

John received a BSc in Biochemistry from McMaster University in 1996 and a diploma in Medical Laboratory Technology (Molecular Genetics) in 1997 from The Michener Institute for Applied Health Sciences. He went on to receive a Bachelor’s in Health Administration and a Master’s in Public Policy from Ryerson University. John was designated a Governance System Professional by Govern for Impact in 2020.

Since 2019 John has volunteered on the Board of Girls Inc. Durham that began as a branch of the Big Sisters movement and advocates on behalf of girls and delivers life-changing programs and experiences. He currently serves as Board President.

The CMLTO Board looks forward to working with John to continue protecting Ontarians through self-regulation of the medical laboratory technology profession.