The customer contacted a siemens customer care center (ccc).The quality controls (qc) were within range on the day of the event.The ccc specialist reviewed the instrument data, which indicated a sample mix issue.A siemens customer service engineer (cse) was dispatched to the customer site.The cse replaced the sample probe 1 (s1) mixer.The cse aligned the arm and ran mix test, which passed.The cse ran an alignment test, which passed.The cse ran a quick check, which passed.The customer ran calibrations and qc, which passed.The cause of falsely depressed glu results on patient samples is unknown.The instrument is performing according to specifications.No further evaluation of the device is required.
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Discordant, falsely depressed glucose (glu) results were obtained on two patient samples on a dimension vista 1500 instrument.The discordant results were not reported to the physician(s).The samples were repeated on the alternate dimension vista instruments, resulting higher.The corrected results were reported to the physician(s).There are no reports of patient intervention or adverse health consequences due to the discordant, falsely depressed glu results.
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