Do not ignore symptoms that may be due to low or high blood glucose. If you have symptoms that do not match the Sensor glucose reading or suspect that your reading may be inaccurate, check the reading by conducting a finger stick test using a blood glucose meter. If you are experiencing symptoms that are not consistent with your glucose readings, consult your health care professional.

Can the FreeStyle Libre system be used during a flight?

If restricted by flight regulations, we recommend that readers be powered off during a flight and not used for scanning a Sensor. Aviation regulations dictate that a flight crew may decide that they do not want any electronic devices powered on during a flight regardless of device. In general, the FreeStyle Libre system is not restricted by flight regulations and can be used since it meets the RTCA guidance of use of medical devices on planes.  The strip port on the reader can be used to take blood glucose or ketone readings during flight.  Turning on the reader with the Home Button will activate the radio.  Users must turn on the reader by inserting a test strip to avoid activating the radio.1

Reference

1. FreeStyle Libre flash glucose monitoring system User's Manual.