A Cath Lab Technician (also known as a Cardiac Catheterization Lab Technician ) is a specialized healthcare professional who works alongside cardiologists, radiologists, and other medical staff to perform diagnostic and interventional procedures in the cardiac catheterization lab (cath lab) . Pre-Procedure Preparation : Prepare the cath lab environment for procedures by ensuring all necessary equipment and tools are sterile, functional, and properly set up (e.g., catheters, guidewires, contrast agents, X-ray machines).