On april 23rd a radiometer representative visited the customer to carry out regular maintenance.He replaced all electrode membranes but by mistake he misplaced the glu and lac electrode.Subsequently, he performed a calibration, which passed, but he did not run qc.This maintenance was finished around 13:00h.The next day the customer measured a patient blood sample (male, (b)(6)) and got a high result for cglu of >300mg/dl.Due to the high result, the patient was treated with an oral hypoglycemic agent.The measurement value from abl800 did not fall and therefore the customer did a new measurement on a third part analyzer.This result indicated that the value of cglu from abl800 was wrong.The customer checked the abl800 and noticed that glu and lac electrodes were installed in reverse.The customer placed the electrode correctly around 10:00h and after that the values from abl800 were as expected.There was no change in the patient's health.
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