The investigation determined that lower than expected quality control results were obtained on vitros myog reagent using non-vitros biorad quality control material on a vitros 5600 integrated system.It was concluded that the qc shift low was caused by an instrument issue as the same non-vitros biorad qc fluids were run on the customer¿s other analyzer without experiencing the same shift.A review of the historical qc results indicates qc performance was acceptable up until the day of the event.An ortho fe performed service actions including replacement of the reagent metering probe, inspections of the microwell incubator, and verification of adjustments to well wash, signal reagent, micro-immunoassay metering and luminometer subsystems.Acceptable myog qc performance has been maintained following service actions.
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