The reagent lot was provided by the customer and lot number was change from unknown to 03511lp27.Investigation of the customer's issue included a review of the complaint text, a search for similar complaints, retained kit testing of an alternate lot and review of manufacturing and labeling documentation.Review of complaint trending reports did not identify any trends for the alinity i insulin assay.Review of complaint activity for reagent lot 03511lp27 did not identify an increase in complaint activity.Return testing was not completed as returns were not available.Since reagent lot 03511lp27 expired on december 7, 2019, a representative reagent lot (05511lp30) was used to assess the performance of the assay.An internal insulin panel, which has known concentrations, was tested with the reagent lot.All specifications were met indicating the assay is performing acceptably.Manufacturing documentation for the reagent lot did not identify any issues associated with the complaint issue.Additionally, labeling was reviewed and sufficiently addresses the customer's issue.Based on the available information, no systemic issue or deficiency of the alinity i insulin assay was identified.
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