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 Sensor be used at altitudes > 10,000 feet (3,048 meters)?

Sensor performance has been tested to 10,000 feet (3,048 meters) only and is not indicated for use in altitudes > 10,000 feet (3,048 meters).1

Reference

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