When applying the Sensor to my arm, do I need to stretch or pinch the skin?
No. Apply Sensors only on the back of your upper arm. Avoid areas with scars, moles, stretch marks, or lumps. Select an area of skin that generally stays flat during normal daily activities (no bending or folding). Choose a site that is at least 2.5 cm away from an insulin injection site. To prevent discomfort or skin irritation, you should select a different site other than the one most recently used. For more information please refer to the FreeStyle Libre user’s manual.1
Reference
1. FreeStyle Libre flash glucose monitoring system User's Manual.