Table 5.
Comparison of currently available CGM systems.
| Dexcom G6 | Medtronic Guardian 3 | FreeStyle Libre | Eversense | |
|---|---|---|---|---|
| Calibration | Not required, can perform | Every 12 h | Not required, cannot perform | Every 12 h |
| Non-adjunctive dosing indication | Yes | No | Yes | Yes |
| MARD | 9.0% | 9.6% (varies by site and calibration frequency) |
9.4% | 8.5% |
| Alerts | Yes | Yes | No | Yes |
| Sensor warm up time | 2 h | 2 h | 1 h | ~26 h |
| Sensor wear time | 10 days | 7 days | 14 days | 90 days |
| Transmitter life | 90 days | 1 year, rechargeable | 14 days | 1 year, rechargeable |
| Share/follow app | Yes | Yes | Yes | Yes |
| Interfering substances | No acetaminophen interference (up to 4 g/day) | Acetaminophen | Vitamin C, Aspirin | Mannitol, Tetracycline, Aspirin |
| Unique features | T:slim integration for Basal IQ and Control IQ | Sugar IQ decision support | No alerts for highs/lows unless scanned; Loses data if not scanned every 8 h |
Implanted CGM; On body vibration alerts without receiver |
Non-adjunctive dosing refers to the ability to make treatment decisions for both hypo- and hyperglycemia based on a CGM sensor glucose value without a confirmatory fingerstick BG measurement.
MARD or mean absolute relative difference is the average of the absolute differences between reference blood glucose measurements and glucose measurements obtained by CGM.