The investigation determined that non-reproducible higher than expected vitros amon quality control results were obtained from non-vitros control fluids using vitros amon slides on a vitros 5600 integrated system.The most likely cause was user error due to the use of ammonia based cleaners near the system which resulted in incubator contamination.An ortho field engineer (fe) performed an incubator decontamination procedure, including cleaning/replacing the incubator evaporation caps and slots, to return the instrument to expected operation.Following this activity, acceptable vitros amon performance was observed.
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The customer observed non-reproducible higher than expected vitros amon quality control results from a non-vitros control fluid using vitros amon slides on a vitros 5600 integrated system.Biorad level 2 lot 54152 amon results: 131.5, 109.8, and 96.6 umol/l versus expected 68.8 umol/l.Biorad level 3 lot 54153 amon result 294.6 umol/l versus expected 222.4 umol/l.Biased results of the direction and magnitude observed may lead to inappropriate physician action.Although there were no reports of affected patient sample results, it cannot be confirmed that patient sample results were not affected and would not be affected if the event were to recur undetected.There were no allegations of patient harm.This report corresponds to ortho clinical diagnostics inc.Complaint number (b)(4).
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