The Wisconsin Veterinary Diagnostic Laboratory, with facilities located in Madison and Barron, is a full service laboratory serving veterinarians from Wisconsin and throughout the United States.

WVDL is accredited by the American Association of Veterinary Laboratory Diagnosticians and provides a broad range of diagnostic services to the production, companion, and exotic animal industries. WVDL performs surveillance tests for a variety of animal diseases (e.g., brucellosis) and performs tests to qualify animals, semen, and embryos for interstate and international shipment.