To thrive as an ER Tech PRN, you typically need basic medical knowledge, experience with emergency care, and a certification such as EMT, CNA, or similar healthcare qualification. Familiarity with EKG machines, phlebotomy equipment, and electronic health record (EHR) systems is important for daily tasks. Strong communication, teamwork, and the ability to remain calm under pressure set standout candidates apart. These combined skills ensure effective support for physicians and nurses, timely patient care, and smooth operations in a fast-paced ER environment.