A siemens customer service engineer (cse) was dispatched to the customer site.The cse cleaned the sample drain with bleach and brushing.The cse ran troubleshooting and tests methods on several analytes and quality controls (qc), resulting satisfactory.The cse ran precision on magnesium qc, resulting satisfactory.The cause of the discordant, falsely elevated mg result is attributed to a dirty sample drain.The instrument is performing according to specifications.No further evaluation of the device is required.
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A discordant, falsely elevated magnesium (mg) result was obtained on a patient sample on a dimension exl 200 instrument.The discordant result was not reported to the physician(s).The sample was repeated on the same instrument, resulting lower.The repeated result was reported to the physician(s).There are no reports of patient intervention or adverse health consequences due to the discordant, falsely elevated mg result.
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