Which of the following actions may a Chiropractic Assistant NOT perform?

The action that a Chiropractic Assistant cannot perform is changing the regimen of patient care set by the supervising chiropractor. This is because altering a treatment plan or regimen requires clinical judgment and a thorough understanding of patient needs, which falls within the scope of practice for licensed chiropractors. Chiropractic Assistants do not possess the necessary education, training, or licensure to make decisions that affect a patient's treatment pathway. Their role is typically limited to supportive tasks that do not involve independent clinical decision-making, ensuring that patient care strategies devised by the chiropractor are followed accurately.

In contrast, taking an x-ray as directed, providing routine follow-up care under supervision, and assisting in patient scheduling are tasks that fall within the permissible responsibilities of a Chiropractic Assistant. These actions support the operational aspects of a chiropractic practice while allowing the chiropractor to maintain oversight and direct the clinical aspects of patient care.