According to the complaint the reference electrode membrane lot 2944 was leaking blood in the measuring chamber and the customer reported the na result was too high.The discrepant measurement for na was 156mmol/l.(12:27am (b)(6) 2021) and the comparison measurement for na 135mmol/l (12:26am (b)(6) 2021).Calibrations did not fail until 5:30am (b)(6) 2021 of that morning.Failed parameters currently were ph, na, ca and k.Next calibration was good.The on-board schedule qc was run at 6:08am, qc level 3 and failed ph, na and ca.The qc level 3 was re-run and passed all parameters.The next on-board scheduled qc was run at 8:00am, qc level 2 failed ph, k and na.These parameters were now locked until a pathology staff could go to the instrument to perform maintenance and fix the problem.Customer went to instrument (abl800 flex analyzer) and found blood leaking from the reference electrode measuring chamber.Customer cleaned the blood from the instrument and remembraned the reference electrode at 10:30am and ran qc level 2 and level 3 and passed.
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