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New Jersey-based Quest Diagnostics Incorporated (DGX) is a leading provider of diagnostic information services, offering a wide range of laboratory testing and data-driven healthcare insights. The company conducts routine, advanced, and specialized clinical tests, including pathology, genetic, and disease-specific diagnostics, to support the detection, monitoring, and treatment of conditions such as cancer, cardiovascular disease, and infectious illnesses.
The company has a market capitalization of $21.8 billion, which classifies it as a “large-cap” stock. The company leverages one of the world’s largest clinical lab databases to generate data analytics and population health insights, supporting preventive care, disease management, and healthcare system optimization.