Heart Test Laboratories, Inc., a medical technology company, provides cardiovascular diagnostic devices. The company offers MyoVista wavECG, a resting 12-lead electrocardiograph (ECG) to provide diagnostic information related to cardiac dysfunction, as well as conventional 12-lead resting ECG information. It serves clinics, doctor's offices, urgent care centers, and hospitals. The company was incorporated in 2007 and is headquartered in Southlake, Texas.