MDL Laboratory
Medical Diagnostic Laboratory (MDL) is a full-service CAP-accredited laboratory in Belleville, Illinois, only 15 minutes from downtown St. Louis. Led by a full-time, board-certified pathologist, the laboratory offers consulting pathologists for consultation in specialized fields.

MDL has provided clinical and anatomical pathology services for the St. Louis metropolitan area for nearly two decades. MDL President and CEO Paul Pongpitoon, MT (ASCP), M.P.H., founded the company with three employees in 1985. Today, MDL has approximately 100 employees located in our headquarters and three stand-alone patient service centers.

Tour MDL's laboratory or read more about our services.

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