Elizabeth Van Cott, MD is director of the Coagulation Laboratory, and medical director of the Core Laboratory at Massachusetts General Hospital. She is past president of the North American Specialized Coagulation Laboratory Association (NASCOLA), and is chair of the Proficiency Testing/External Quality Assessment program. She is a co-chair of the Plasma Coagulation Inhibitors Scientific Subcommittee (SSC) of the International Society on Thrombosis and Haemostasis (ISTH). She is an advisor for the Area Committee on Hematology for the Clinical and Laboratory Standards Institute (CLSI), and contributes to writing coagulation laboratory guidelines for CLSI. Dr. Van Cott is an inaugural member of the Standards Committee of the College of American Pathologists (CAP), and was a committee member of the Coagulation Resource Committee for six years. She is an inaugural director on the board of the Thrombosis and Hemostasis Societies of North America (THSNA) and is their Treasurer. Dr. Van Cott was an invited expert at two recent CAP consensus conferences on coagulation, which generated national consensus guidelines for laboratory monitoring of anticoagulant therapy, and thrombophilia. She has over 150 publications on coagulation, and is an editor or editorial board member of multiple journals.