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The CMLTO’s Annual Registration Renewal for 2023 began on November 1, 2022. All medical laboratory technologists registered in Ontario must renew their CMLTO registration online by December 31, 2022, at 11:59 p.m. EST.

The Annual Registration Renewal notice, which includes renewal instructions, was sent by postal mail on October 17, 2022. Registrants can start their renewal process by following the link here and carefully following the instructions provided. 

Information regarding registration renewal is available at www.cmlto.com. If you have any questions, please contact the Registration department by telephone at 1-800-323-9672 extension 1 or by email at This e-mail address is being protected from spambots. You need JavaScript enabled to view it .


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