Investigation conclusion: the customer's complaint was not replicated in-house with retention devices and returned patient urine sample.Retention devices were tested (n=29) with three high levels of hcg urine controls (205.2 iu/ml, 208.6 iu/ml, and 216.8 iu/ml) and all results were positive at the 3 minute read time.Customer returned urine sample was tested with retain devices (n=2) and all results were positive at the read time.No false negative results were observed during the investigation.Urinalysis of the returned urine sample showed abnormal results for bilirubin, ketone, blood, protein, and leukocytes.Manufacturing batch record review did not uncover any relevant non-conformance.The customer's false negative results were not replicated during the investigation.Based on the information available, there is no indication of a product deficiency.No corrective action is required at this time.
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