Medical Laboratory Technologists (MLTs) are one of Ontario’s regulated health professionals. Before practising in Ontario, MLTs must meet the registration requirements established by the College of Medical Laboratory Technologists of Ontario (CMLTO). Registration with the CMLTO ensures that an MLT has met the requirements for safe and competent practice. Applications to the CMLTO for registration consist of an online application followed by the submission of supporting documents. 

For those interested in registering with the CMLTO, please review the following pages for information about the registration process and requirements.

Do you know the CMLTO registration requirements, and are you ready to apply? The button below will take you to the CMLTO’s applicant portal. Please note that you can save and return to it at any time to complete the application.

If you have questions or require assistance, please contact the CMLTO Registration Department by email at