The FreeStyle Libre 2 Flash Glucose Monitoring System (FreeStyle Libre 2 Reader or FreeStyle Libre 2 app used with FreeStyle Libre 2 Sensor) is indicated for measuring interstitial fluid glucose levels in people aged 4 years and older with diabetes mellitus. The System is designed to replace blood glucose testing in the self-management of diabetes, including dosing of insulin. Treatment decisions should be based on real-time Sensor glucose readings and other information on the results screen, including trend arrow and recent sequential readings on the glucose graph. The System also detects trends and tracks patterns and aids in the detection of episodes of hyperglycaemia and hypoglycaemia, facilitating both acute and long-term therapy adjustments.