The customer received a questionable elecsys ferritin result for one patient sample.The initial result was 1.02 ng/ml and the repeat result was 39.94 ng/ml.The initial result was reported outside the laboratory.The repeat result was believed to be correct.The patient was not adversely affected.The reagent lot number was 20990805 with an expiration date of 5/31/2018.The field service representative flushed the reagent probe, checked and cleaned the bead mixer and sipper probe, and visually inspected measuring cell.The customer ran calibration and qc.No abnormal trends were identified for this issue.The customer has had no other complaints of this nature on a like analyzer in the past 12 months.
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