An evaluation was performed by reviewing the complaint text, other customer complaints for similar issues, a review of labeling, and a review of historical data.The customer observed falsely elevated magnesium results generated for one patient sample on the architect c8000 (serial number (b)(4)).The field service representative (fsr) resolved the issue by cleaning the cuvettes (segment, cuvette assy, complete (list number (b)(4))).Review of the service history for this instrument revealed no subsequent complaints of discrepant/erratic results.A review of complaints did not identify any trend or similar complaints for this issue.A review of labeling shows adequate information is provided regarding troubleshooting of the described issue.Based on the results of this investigation, there is no indication of a deficiency or malfunction of either the architect (b)(4)or the cuvettes ((b)(4)).
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