Siemens customer service engineer (cse) reviewed cleaning technique of test table with customer.Customer stated that the insert is cleaned after every test with an alcohol swab and calibration bar is cleaned with gauze and tap water.Cse explained customer to use distilled water for proper cleaning of calibration strip.Customer indicated that they have been able to intermittently pass qc but qc has failed and due to qc lockout not being setup on instrument they proceeded to run patient tests without qc passing.Customer should not have run patient samples when qc failed.Cse explained customer that correct range for level 2 control according to insert is 100-300 for creatinine and would put their control in range.Customer stated that he would double check with his supervisor and let cse know after they confirm the control range.The event has occurred due to an operator error.
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