Approximately 550 pediatric and young adult subjects aged 4-30 years with type 1 or type 2 diabetes, who require daily blood glucose monitoring to manage their diabetes will be enrolled in the study. Subjects and/or their caregivers will utilize he FreeStyle Libre 2 Flash Glucose Monitoring System for managing diabetes for 6 months. Subjects and/or their caregivers will maintain a diary/log book of Adverse Events experienced during the duration of the study. Assessment of Adverse Events will occur via self reporting at each monthly visit and/or phone call.

