This section is dedicated to providing information in those instances when you do not know where else to look. It includes links to other organizations, approved pre-requisite courses, and archived BLS e-newsletters.

If you are aware of a resource that should be listed, please contact us at Thank you.



Below are links to the Exam Reference Guides, each containing a brief overview of the Areas of Practice for its respective exam. These guides are intended to assist the candidate with study materials and information.

* Please note that the CMLSO exam is currently based on the Z136.3 – 2011. Although a newer edition of the standard is available, it is advisable to study the older edition for this exam. 

Certified LSO Exam Reference Guide (last updated June 2019)
Certified Medical LSO Exam Reference Guide (last updated April 2013)

List of Approved Courses 1

1. Please note that these courses satisfy the prerequisite to sit for the exam, but are not considered exam preparatory courses.

Due to health concerns, the spring CLSO/CMLSO exam is being cancelled and the 2020 DOE workshop has been postponed. The fall exam will be held be held prior to the 2020 DOE workshop on August 17th, 2020. Our office team is working remotely and ready to assist you during our regular business hours!

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