Customer's observation was not replicated in-house with retention devices.Retention devices were tested with hcg 25 miu/ml cutoff urine control and 3 high level hcg positive urine control, all results were positive at read time.No false negatives were obtained.Manufacturing batch record review did not uncover any abnormalities.Root cause could not be determined without patient specimen in-house analysis.Based on the information available, 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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