Customer's observation was not replicated in-house with retention devices.Retention devices were tested with high level hcg positive urine controls.All results were positive at read time.No false negatives were obtained.Mfg batch record review did not uncover any abnormalities.Root cause could not be determined w/o pt specimen in-house analysis.Based on the info, there is no indication of a product deficiency.No corrective action is required at this time.This issue will be subject to tracking and trending.
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