A review for any complaints against glucose reagent lot 51839uq09 was performed, and no other complaints or trends were identified.Return testing was not completed as returns were not available.The field service engineer inspected the instrument and identified a rusty wire in the incubator, and water pressure to the probe wash cups and mixer was low.The o-rings and diaphram pump parts were replaced proactively.After the repairs were performed, assay performance was checked and was acceptable.The instrument result log during the time frame was reviewed to confirm the customer's report.The samples with the glucose values attributed to the complaint were not located.In addition, the sample ids reported by the customer were not located in the log.The actual printouts from the customer were requested, but were not available.A review of labeling concluded sufficient information is provided to detect, troubleshoot and resolve results related problems, should they occur.Erratic results and/or poor precision is addressed in the operations manual with the most likely causes to be either sample preparation or instrument hardware.Manufacturing documentation for glucose, list number 3l82 was reviewed and no contributing factors to the complaint could be identified.Based on this investigation no product deficiency was identified for glucose reagent, lot 51839uq09.This issue was previously reported under mdr number (1415939-2018-00072) associated with the incorrect manufacturing site.
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