Review Question - QID 109795

A 35-year-old woman with a 2-year history of auditory hallucinations and periods of anhedonia and amotivation is being seen by her psychiatrist after multiple failed rounds of treatment for her condition. She was started on a previous medication at her last visit, but she was told to stop taking the medication since she developed muscle stiffness and spasms soon after taking the drug. Today, her temperature is 97.7°F (36.5°C), blood pressure is 132/76 mmHg, pulse is 98/min, and respirations are 12/min. The patient is now started on a new medication that will seek to avoid the same side effects as her previous one; however, she will need to come in for weekly testing. Which of the following should be tested weekly?