Table 1.
Characteristics of Current Continuous Glucose Monitoring Systems. Systems Combined with an Insulin Pump Are not Included4
| Guardian REAL-Time (Enlite) | DexCom G4TM | FreeStyle Navigator II | |
| Thickness of the sensor electrode [gauge (mm)] | 27 (0.36) |
31 (0.23) |
23 (0.6) |
| Length of the sensor electrode (mm) | 8.75 | 13 | 5 |
| Angle of insertion (degrees) | 90 | 45 | 90 |
| Period of use (days) | 6 | 7 | 5 |
| Onset of use after positioning of the sensor (h) | 2 | 2 | 1 |
| Calibration by blood glucose measurements after x h | 2, 8, then every 12 | 2 then every 12 | 1, 2, 10, 24, 72 |
| Display of current measuring values every x min | 5 | 5 | 1 |
| Display of glucose levels over x hours | 3, 6, 12, 24 | 1, 3, 6, 12, 24 | 2, 4, 6, 12, 24 |
| Data download | Possible | Possible | Possible |