Selected Differences in Available Flash CGM Devices
| . | FreeStyle Libre . | FreeStyle Libre Pro . | FreeStyle Libre 2 . |
|---|---|---|---|
| FDA age approval, years | ≥18 | ≥18 | ≥4 |
| Approved for nonadjunctive use (i.e., for medication dosing) | Yes | Yes | Yes |
| Approved application site | Back of upper arm | Back of upper arm | Back of upper arm |
| Blinded data | No | Yes | No |
| Possible integration with insulin pump | No | No | Yes, via integrated CGM designation |
| Wear time, days | 14 | 14 | 14 |
| Water resistance | 3 feet for 30 minutes | 3 feet for 30 minutes | 3 feet for 30 minutes |
| Warm-up time, hours | 1 | 1 | 1 |
| Calibrations/day | None | None | None |
| Frequency of glucose readings | Every 1 minute (historical data storage every 15 minutes) | Every 1 minute (historical data storage every 15 minutes) | Every 1 minute (historical data storage every 15 minutes) |
| MARD, % | 9.4 | 12.3 | Adults: 9.2; pediatrics: 9.7 |
| Alarms for hypoglycemia/hyperglycemia | No | No | Yes, customizable |
| . | FreeStyle Libre . | FreeStyle Libre Pro . | FreeStyle Libre 2 . |
|---|---|---|---|
| FDA age approval, years | ≥18 | ≥18 | ≥4 |
| Approved for nonadjunctive use (i.e., for medication dosing) | Yes | Yes | Yes |
| Approved application site | Back of upper arm | Back of upper arm | Back of upper arm |
| Blinded data | No | Yes | No |
| Possible integration with insulin pump | No | No | Yes, via integrated CGM designation |
| Wear time, days | 14 | 14 | 14 |
| Water resistance | 3 feet for 30 minutes | 3 feet for 30 minutes | 3 feet for 30 minutes |
| Warm-up time, hours | 1 | 1 | 1 |
| Calibrations/day | None | None | None |
| Frequency of glucose readings | Every 1 minute (historical data storage every 15 minutes) | Every 1 minute (historical data storage every 15 minutes) | Every 1 minute (historical data storage every 15 minutes) |
| MARD, % | 9.4 | 12.3 | Adults: 9.2; pediatrics: 9.7 |
| Alarms for hypoglycemia/hyperglycemia | No | No | Yes, customizable |