The investigation determined that a lower and higher than expected vitros amon results were obtained when testing non-vitros quality controls on a vitros 5600 integrated system.Biorad qc level 2 amon result 103.7 umol/l versus expected 75.5 umol/l.Biorad qc level 3 amon result of 15.7 umol/l versus expected 227.7 umol/l.The assignable cause of this event was instrument related most likely due to incubator contamination.The customer completed an incubator decontamination procedure including cleaning/replacing the incubator evaporation caps and slots, and returned the instrument to expected operation.Following this activity, acceptable vitros amon performance was observed.
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