The anesthetic is a supplied item and the complaint notification was forwarded to the supplier.Batch record review performed by the supplier for bupivacaine lot # 52140ev revealed no discrepancies that may have contributed to a complaint of this nature.All testing was performed and was within specification requirements.Potency testing performed on retained sample for the reported drug lot # found to be within specification.Possible causes of lack of effect may be administration technique or patient anatomical variations, including pathological or psychological factors.The complaint could not be confirmed.
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