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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.The product device history records were also reviewed based on the lot number provided, and no anomalies were found.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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