There was no additional patient information provided by the customer.A review of tickets determined that there is normal complaint activity for magnesium, lot 64034un20.Trending review determined no trends for falsely elevated results for the product.Return testing was not completed as returns were not available.A repeat test on the patient samples at the customer site produced an acceptable result.Historical performance of lot number 64034un20 was evaluated using world wide data from abbottlink.The evaluation indicated that the patient median result for the lot is within the established control limits.Therefore, no unusual reagent lot performance was identified.A review of the manufacturing documentation did not identify any issues associated with the customer's observation.A review of the product labeling concluded that the issue is sufficiently addressed.Based on the investigation, no systemic issue or deficiency of the magnesium reagent, lot 64034un20 was identified.
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