The customer observed falsely elevated co2 results while using the clinical chemistry co2 assay.The customer provided the following data for 4 patients (normal range is 23-31 meq/l): sid (b)(6): initial 32 meq/l, retested using new reagent 27 meq/l.Sid (b)(6): initial 35 meq/l, retested using new reagent 29 meq/l.Sid (b)(6): initial 32 meq/l, retested using new reagent 27 meq/l.Sid (b)(6): initial 31 meq/l, retested using new reagent 27 meq/l.No impact to patient management was reported.No additional patient information was provided.
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An evaluation of the customer issue included a review of the complaint text, review of technical bulletin, a search for similar complaints, and a review of labeling.Return material was not available.The technical bulletin was reviewed and provided adequate troubleshooting specifying how reagent handling, exposure to air, and water quality may also impact co2 results.Tracking and trending did not identify an adverse trend.Labeling was reviewed and found to be adequate.Based on the available information no product deficiency of the clinical chemistry co2 reagent list number 03l80, lot number 52577uq02, was identified.
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