The customer observed falsely elevated architect total psa results for one patient.The customer indicated the (b)(6) male patient had been diagnosed with prostatic hyperplasia in 2003.Since that time the patient clinical results have remained around 5.0.The results generated on (b)(6) 2014 (sid (b)(6)) were elevated: initial 12.11 ng/ml, retest 12.38 ng/ml.Reproducibility testing was completed on (b)(6) 2014; generating elevated results: 13.757, 13.612 ng/ml.There was no adverse impact to patient management reported.
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Further investigation of the customer issue included a review of the complaint text, in-house testing, a batch record review, a search for similar complaints, and a review of labeling.An accuracy testing protocol was executed using lot 33190lf00 and met acceptance criteria which determined the reagent is performing acceptably.Return material was not available.A batch record review did not identify any issues.Tracking and trending did not identify an adverse trend.Labeling was reviewed and found to be adequate.Based on the available information no malfunction and no product deficiency of the architect total psa reagent list number 07k70, lot number 33190lf00, were identified.
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