Performance Characteristics for Flow Cytometric Enumeration of Peripheral Blood Lymphocyte Subsets under Harmonized Laboratory Conditions: A Multicenter Study.
BACKGROUND Flow cytometric enumeration of peripheral blood lymphocyte subsets (EPBLS) is essential for disease management, yet standardized validation criteria are lacking. We defined key performance characteristics under harmonized conditions to support criteria development. METHODS 205 whole blood samples and 54 qu...