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During the investigation chemical, sterility and viscosity testing was performed on samples from the same stock and lot.The chemical composition, sterility, and viscosity was tested and revealed no anomalies.A review of the product device history files was performed based on the lot number provided.No discrepancies were found in this investigation.The root cause for the failure cannot be determined due to no anomalies detected.If further information is obtained that might add value to the contents of the investigation report, an additional follow-up report will be submitted.
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