Certified EKG Technician (CET) National Healthcareer Association (NHA). Learn to perform tasks such as set up and administer EKGs (electrocardiograms) and stress tests, prepare patients for Holter or ambulatory monitoring, edit and deliver final test results to physicians for analysis, schedule appointments, and transcribe physicians’ interpretations. The need for qualified EKG technicians continues to rise as the aging population in America grows (and with it, the prevalence of heart-related conditions). Earning your CET will help you launch a successful and meaningful career that can help make a difference in countless lives. Whether you seek full-time or part-time employment, the opportunities in this profession are flexible and in high demand. Plus, the added skills of Holter monitoring and stress tests required for the Certified EKG Technician (CET) will help you to be even more competitive as you launch your healthcare career.