The device history record (dhr) is established based on serial number however a serial number was not provided therefore the dhr was unable to be reviewed.A lot number was provided however the lot does not correspond with the dhr.No samples were received for evaluation.Because a sample was not returned, we were unable to perform a follow up investigation to include functional and visual evaluations to confirm the reported issue and determine the root cause, therefore a corrective action is not applicable at this time.If a sample is received at a later date, this complaint will be reopened for further investigation.This complaint will be used for tracking and trending purposes.
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