These roles include but are not limited to: direct patient care and observations, basic hemodialysis techniques and procedures, equipment maintenance, water treatment monitoring, vascular access monitoring, cleaning and disinfection of the hemodialysis machine,, drawing blood samples and preparing them for transport, and performing both simple and complex laboratory tests and the required quality controls. The Clinical Hemodialysis Technician carries out designated skills that are within these functions limited by law to unlicensed nursing personnel, as covered in the Core Curriculum for the Dialysis Technician and as written into the policies and procedures of Mayo Clinic.