Siemens has completed the investigation.The investigation based on the review and evaluation of data from the instrument log, aqc expected recovery, calibration history, and the absence of any drifts in po2 sensor slope suggests that the po2 sensor was stable and performing normally.The observed differences between the po2 results on the device may be due to differences in sample handling or sample collection drawing procedure.The device is performing as intended and is currently operational at the customer site.The cause of this event is unknown.
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