Study of an Interstitial Fluid Glucose Sensor

Up to 200 adult and 250 pediatric (17 years of age or younger) subjects will be enrolled to obtain at least 200 evaluable subjects. At least four (4) subjects between the ages of 2 and 5 will be enrolled. Subjects will wear a total of two (2) sensors, one on the back of each upper arm. Each subject will wear two sensors, from the same Sensor lot, one on the back of each upper arm. One or more unique sensor lots will be evaluated in this study. Subjects will make between four (4) and six (6) scheduled visits to the clinical study site, including the Enrollment/Screening Visit (Visit 1). Subjects aged 2 - 5 will have one (1) in-clinic visit where capillary blood testing will be performed. Based on the subjects age and/or weight, subjects age 6 or older, will have up to three in-clinic visits during which intravenous blood draws and YSI reference testing will occur. Based on the subjects' age, blood glucose levels may be manipulated.