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Retention devices for the reported lot were tested with in-house drug-free donor urine.All devices were read at 5 minutes and yielded expected negative results.Manufacturing batch records of the final-product, relevant product components, and quality control release data were reviewed.No relevant non-conformances, deviations, or abnormalities were found.All quality control specifications were met.Retention products performed as expected during in-house testing and could not replicate the reported complaint.Complaints are tracked and trended on a monthly basis.This product provides only a qualitative preliminary analytical result.A secondary analytical method must be used to obtain a confirmed result.Gas chromatography/mass spectrometry (gc/ms) is the preferred confirmatory method.Per the package insert, there is a possibility that interfering substances in the urine specimen may cause erroneous results.Please refer to the "cross-reactivity" section within the performance characteristics portion of the package insert for a list of evaluated substances.A positive result might be obtained from certain foods or food supplements.
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