Anti-Rubella Immunoglobulin G Proficiency Testing Results Suggest Consistent Manufacturer Differences and Opportunity for Harmonization

Affiliations

• ¹ Department of Laboratory Medicine & Pathology, University of Washington, Seattle.
• ² Department of Biostatistics, Surveys, College of American Pathologists, Northfield, Illinois.
• ³ Department of Laboratory Improvement Programs, Surveys, College of American Pathologists, Northfield, Illinois.
• ⁴ Department of Pathology, Anatomy, and Laboratory Medicine, West Virginia University, Morgantown.
• ⁵ Immunopathology Laboratory, Robert Tomsich Pathology and Laboratory Medicine Institute, Cleveland Clinic, Cleveland, Ohio.
• ⁶ Cleveland Clinic Lerner College of Medicine, Case Western Reserve University, Cleveland, Ohio.
• ⁷ Rheumatology Division, Department of Medicine, University of Washington, Seattle.