li>MA's may instruct patients about medications and special diets as directed, prepare and administer medications as directed, authorize drug refills according to protocols as directed, telephone prescriptions to a pharmacy, draw blood, prepare patients for X-rays, take electrocardiograms, remove sutures, and change dressings. - MA's may assist Physicians, Physicians Assistants and Nurse Practitioners with patient preparation and treatment, patient chart organization, dissemination of reports; referrals, telephone calls, inventory, ordering and general organization.