Westgard QC

Westgard QC is a privately held healthcare laboratory quality management company focused on quality control education, analytical tools, consulting, and software for clinical laboratories. The company is best known for the "Westgard Rules," a statistical quality control framework widely used in laboratory medicine to monitor assay performance and reduce analytical errors. Westgard QC offers books, online courses, workshops, calculators, QC design resources, method validation tools, and consulting services to laboratories and diagnostics companies. Its business is centered on improving laboratory quality systems, regulatory compliance, method validation, and patient-safety-oriented quality practices rather than developing therapeutics. The company appears to operate as an active family-run business led by James O. Westgard and Sten Westgard.