The customer called to the technical support center (tsc) to report a bad chloride (cl) electrode, which caused patient results to be affected.The customer changed the cl electrode on (b)(6) 2017 due to recommended maintenance.The customer successfully ran calibration and qc was within range.Then the customer noticed that some of the results were high and reran qc, which was out.The customer changed the cl electrode on (b)(6) 2017 again, which resolved the issue.The tsc sent a replacement cl electrode.The cause of the discordant cl results was a failed electrode.The instrument is performing according to the specifications.No further evaluation of this device is required.
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Discordant, falsely low chloride (cl) results were obtained on multiple samples on a advia 1800 instrument.Samples were repeated on same instrument, and recovered higher.The discordant results were reported to the physician(s).All samples were repeated on the same advia 1800 instrument.The repeat results were reported to the physician(s) for all samples.There are no reports of patient intervention or adverse health consequences due to the discordant cl results.
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