According to the complaint, customer samples were measured on an abl90 flex analyzer with the following result for po2: sample #(b)(6) / 2019-05-01 / 09:24h (measurement time) / analyzer serial number (b)(4) / 139 mmhg sample #(b)(6) / 2019-05-01 / 09:31h (measurement time) / analyzer serial number (b)(4) / 65.1 mmhg.However, the analyzer made an error message about the level of 139 mmhg.After a service inspection on 2019-05-05, another similar incident appeared: sample #(b)(6) / 2019-05-29 / 09:59h (measurement time) / analyzer serial number (b)(4) / 115 mmhg sample #(b)(6) / 2019-05-29 / 16:19h (measurement time) / analyzer serial number (b)(4) / 78.9 mmhg based on the measurements and the patient's condition, the customer reports the results of po2 115 mmhg as false high.
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