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About CAP

The College of American Pathologists (CAP) is a medical society serving more than 18,000 physician members and the global laboratory community. It is the world’s largest association composed exclusively of board-certified pathologists and pathologists in training, and is the worldwide leader in laboratory quality assurance. The CAP advocates accountable, high-quality, and cost-effective patient care.

The CAP has led laboratory accreditation for more than 50 years with nearly 7,500 CAP-accredited laboratories in 50 countries. More than 20,000 laboratories are enrolled in the College’s proficiency testing programs.

CAP Mission Statement

The College of American Pathologists, the leading organization of board-certified pathologists, serves patients, pathologists, and the public by fostering and advocating excellence in the practice of pathology and laboratory medicine worldwide.


College of American Pathologists
325 Waukegan Road
Northfield, IL 60093-2750
847-832-8000 (fax)

Washington, DC Office
1350 I Street, NW Suite 590
Washington, DC 20005
202-354-8101 (fax)