Complaint trending was reviewed for the two potential lot codes provided, 19k04ka and 19j23ma.There were no other similar complaints found for either of the two potential lot codes outside of the related complaints.Batch records were reviewed and all testing results met specifications for both potential lot codes at the time of release.Ten unopened viscoelastic folding boxes with potential lot number 19k04ka and five unopened viscoelastic folding boxes with potential lot number 19j23ma were received as complaint samples.The chemical lab tested the ph and the osmolality of the products and the results are within specifications.Since all initial test results are conforming, no production deviations that could cause the reported defect were reported and the returned samples are conforming for the tested parameters, the complaint could not be confirmed.A root cause cannot be determined.After investigation, we can conclude that the investigated product met specifications at the time of release therefore, a specific corrective action or preventive action cannot be initiated however, further trending is performed.The manufacturer internal reference number is: (b)(4).
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