Method Evaluation
•Assumptions regarding laboratory testing:
•Ulaboratory practitioner must demonstrate competency for procedure and instrumentation. 
•Ureagents, controls, and calibrating materials used to manufacturer=s protocol.
•Ucommercially prepared materials are being used prior to the expiration period.
•Uthe method shows analytic linearity throughout the reporting range.
•Method evaluation should include:
•Utesting for Arandom error (RE)@
•Utesting for Asystematic error (SE)@