TABLE 1.
Comparison of Personal CGM Devices
| FreeStyle Libre | Dexcom G6 | Dexcom G5 | Medtronic Guardian Sensor 3 | Eversense | |
|---|---|---|---|---|---|
| Type of system | isCGM | rtCGM | rtCGM | rtCGM | rtCGM |
| Approved for insulin dosing? | Yes | Yes | Yes | No | No |
| Calibration requirements | None | None | At least twice daily | At least twicedaily | At least twice daily |
| Compatibility with mobile devices | Reader, Apple smartphone (14-day system only) | Receiver, Android and Apple smartphones, smartwatches, and Tandem t:slim X2 insulin pump | Receiver, Android and Apple smartphones, smartwatches, and Tandem t:slim X2 insulin pump | Guardian Connect app on Apple iOS devices | Android and Apple iOS smartphones, smartwatches, and other devices |
| Real-time remote data sharing? | No | Yes | Yes | Yes | Yes |
| Integration with insulin pump? | No | Yes (Tandem t:slim X2) | Yes (Tandem t:slim X2) | Yes (Minimed 630G and 670G) | No |
| Sensor wear | 14 or 10 days | 10 days | 7 days | 7 days | Currently approved in the Untied States for up to 90 daysafter implantation in upper arm (under local anesthesia; in-office procedure) |
| Warm-up time | 14-day system: 1 hour 10-day system: 12 hours |
2 hours | 2 hours | 2 hours | 24 hours |
| Predictive low glucose alert? | No | Yes | Yes | Yes | Yes |
| Covered by Medicare? | Yes, for people who take insulin at least three times daily and perform SMBG four times daily | To be covered in late 2019 | Yes, for people who take insulin at least three times daily and perform SMBG four times daily | No | No |
| MARD | 10-day system: 9.7% 14-day system: 9.4% (11) |
9% (12) | 9% (13) | 9.6–10.5%* (14) | 8.8% (15) |
| Transmitter charging needed? | No | No | No | Yes, weekly with sensor change | Yes, daily |
*
Based on two versus three to four calibrations per day using CONTOUR NEXT Link 2.4 meter.