Investigation findings: the complaint sample was not returned, several attempts were made to collect the sample using (b)(4).The lot was not listed.Product on hand at (b)(4) was reviewed at random, no product defect was found.Correction: none required.Root cause analysis: unable to determine, lack of sample.Corrective action and/or systemic correction action taken: no action is required at this time, no manufacturing issue was found during an in house review, the complaint sample was not returned.No action is required at this time, no manufacturing issue was found during an in house review.
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