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.

In a situation where blood glucose levels are rapidly changing, should I trust FreeStyle Libre system or use a blood glucose meter (BGM)?

If you suspect your blood glucose is changing rapidly, check your blood glucose on your finger with a blood glucose meter. For your convenience, your reader has a built-in meter that can be used to test your blood glucose and blood ketones.1

Reference

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