The Sensors* are applied to the back of the upper arm with a disposable device called an applicator. When the Sensor is applied, a small (5mm) sterile filament is inserted just under the skin and held in place with a small adhesive pad. In a study conducted by Abbott Diabetes Care, most patients don't feel pain when applying the FreeStyle Libre or FreeStyle Libre 2 Sensor¹.

* FreeStyle Libre sensors refers to the FreeStyle Libre and FreeStyle Libre 2 sensors
1. Data on file. In a study conducted by Abbott, 93.4% of patients surveyed (n=30) did not feel discomfort under the skin while wearing the Sensor.