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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.

Message from the CMLTO Board Chair

15 September 2021

As we head toward Fall 2021, the Ontario COVID-19 Science Advisory Table advises that Ontario “is in the 4th wave of the COVID-19 pandemic. Our models, federal models, and models in other jurisdictions predict a substantial 4th wave.”

The CMLTO Board of Directors supports the Table’s September 1st statement that vaccination offers substantial protection against severe health outcomes. Its modelling suggests that there will be “a rapid increase in the number of seriously ill people needing hospital care as workplaces and education re-open in September.” As such, the CMLTO office and Board will continue to operate virtually until further notice.

The Ministry of Health (MOH) is deploying its last mile strategy to reach eligible Ontarians who haven’t received a first or second vaccine. On September 1st the Ontario government announced that it “will require people to be fully vaccinated and provide proof of their vaccination status to access certain businesses and settings starting September 22, 2021.”

On September 14th, the government released “the regulations and guidance for businesses and organizations to support them in implementing proof of vaccination requirements” when they take effect next week.

If you need help in obtaining a vaccination for yourself or your family, please visit the MOH’s COVID-19 site.

Planned website outage

09 September 2021

Please note that the CMLTO website will be unavailable at 1:00 am to approximately 1:30 am, on September 10, 2021, for scheduled maintenance. Please accept the CMLTO's apologies for any inconvenience.

Looking for a speaker?

09 September 2021


The CMLTO is committed to building relationships with members, other health profession colleges, key stakeholders, and the public. 

The CMLTO can provide speakers on a wide variety of topics, including its regulatory role, ethics and professionalism, interprofessional collaboration, and the Voluntary Roster of Registered Medical Laboratory Technicians.

To request a CMLTO speaker to deliver a virtual presentation, please email registrantrelations@cmlto.com.

CMLTO closed for Labour Day

03 September 2021

The CMLTO will be closed on Septermber 6, 2021, for the Labour Day statutory holiday. Regular business hours resume at 8:30 am on September 7th.

CMLTO sites to undergo maintenance

06 August 2021

Please note that the CMLTO websites including the Public Register and CMLTO online services will be offline briefly for maintenance at 9:00 am on August 9, 2021. The College apologizes for the inconvenience.

CMLTO closed on August 2, 2021

29 July 2021

The CMLTO will be closed on August 2, 2021, for the Civic Holiday. Regular business hours will resume on August 3rd.

Service disruption

19 July 2021

The CMLTO Public Register is currently unavailable. Please be advised that the issue is being investigated and accept the CMLTO's apologies for the inconvenience.

Share your thoughts: Equity and anti-racism survey

15 July 2021

You are invited to participate in the Equity and anti-racism survey, commissioned by the Health Profession Regulators of Ontario (HPRO).

This survey is designed to explore how equity and anti-racism may influence the work of Ontario’s health profession regulators, like the CMLTO. Equity refers to addressing disproportionality between and across different groups, while anti-racism refers to an active process of identifying and addressing racial prejudice and discrimination.

The survey is open until July 31, 2021, and it is estimated that it will take 8-10 minutes to complete.

Click here to complete the survey. If you have questions or would like further information about this survey, please contact the survey administrator Dr. Javeed Sukhera at me@javeed.ca.

About HPRO
HPRO is composed of the 26 regulatory Colleges that regulate 29 distinct health professions involving more than 400,000 healthcare professionals in Ontario. HPRO's mandate is to serve in the best interest of Ontarians. Learn about HPRO.