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(b)(4) follow up.It was reported that the syringe exhibited a black liquid substance on the top portion.Because no physical sample was returned, a comprehensive evaluation could not be performed.To support the investigation, the quality team reviewed three photographs of a 10ml luer lok syringe.One photograph shows the variable data on the top web slip, including all applicable product information.The second shows the clear side of the package with the needle shield displaying dark discoloration.The third shows the syringe outside the package with the same discoloration visible on the needle shield.No other defects or imperfections were observed in the images.A device history record review was completed for material number 309642, lot 5232394.The review confirmed that all visual inspections were performed per requirements, with no quality notifications related to the reported condition.The lot was inspected and accepted in accordance with the inspection control plan and subsequently approved for shipment.Additional device histories were reviewed for each lot of needles used in manufacturing this final batch, and no documentation of this type of defect was found during the production run.To date, no other similar events have been reported for this lot.Based on the investigation and the photograph based assessment, the customers reported symptom is confirmed.In the absence of the physical sample, a probable root cause could not be determined.
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