The customer observed multiple falsely elevated b12 results while using the architect i2000sr analyzer.The following data was provided.The customer uses normal range 138 to 652 pmol/l.Patient 1 initial 152, repeat using another analyzer 93.Patient 2 initial 232, repeat using another analyzer 152.Patient 3 initial 146, repeat using another analyzer 95.No impact to patient management was reported.
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As part of troubleshooting, the customer replaced the r1 and r2 probes (part 08c94-42), recalibrated the assay, and reran the quality controls.System function was verified by performing a successful calibration as well as a precision run.No additional discrepant results were reported.The analyzer was returned to normal operation.Evaluation of the customer issue included a review of the complaint text, a search for similar complaints, a labeling review, instrument log review, and an instrument service review.No returns were made available from the customer site for this evaluation.No adverse trend was identified for the customer issue.Labeling was reviewed and found to be adequate.The issue was resolved through standard troubleshooting procedures.Service history review identified no contributing factors to the customer issue.A malfunction was identified as the device failed to meet performance specifications or otherwise perform as intended at the customer site.However, a systemic issue and/or product deficiency was not identified.
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