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The complaint investigation for a falsely elevated architect free t4 result included a search for similar complaints, the review of complaint text, trending data, labeling, device history records, and testing of retained reagent kit.Return testing was not completed, as returns were not available.Accuracy testing was performed using panels, which mimics patient samples, and an in-house retained kit of lot 57269ud00, stored at the recommended storage condition.The testing was completed indicating that the product is performing as expected.An increase in complaints has been observed for lot 57269ud00, however, in-house performance testing was completed which indicates the product is performing as expected.Device history record review did not identify any non-conformances or deviations for the likely cause lot and complaint issue.Manufacturing documentation for the likely cause lot was reviewed and did not identify any issues.Labeling was reviewed and found to adequately address the issue under review.Based on the information provided and abbott diagnostics¿ complaint investigation, no systemic issue or deficiency of architect free t4, lot number 57269ud00, was identified.
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