The FreeStyle Libre systems^ are indicated for measuring interstitial fluid glucose levels in people (age 4 and older) with diabetes mellitus. The indication for children (age 4 - 12) is limited to those who are supervised by a caregiver who is at least 18 years of age. A caregiver at least 18 years old is responsible for supervising, managing, and assisting the child in using the FreeStyle Libre system and interpreting its readings.

^ FreeStyle Libre 2 and FreeStyle Libre 3 systems are part of the same family of products.