Table 1.

Current commercialized CGM sensor systems.

Company	Model	Features		MARD
Abbott		Trend marks Rate-of-change alerts Alarms (hyper/hypo) 5-day lifetime	Calibration recommended up to 72 h	14.5% [26]
		Trend marks No alerts or alarms 14-day lifetime NFC communication with smartphone	Read approaching meter to sensor (NFC technology) No calibration needed	11.4% [27]
Dexcom		Trend marks Rate-of-change alerts Alarms (hyper/hypo) 7-day lifetime	Remote monitoring Calibration every 12 h	13% [28] (Original algorithm)
		Trend marks Rate-of-change alerts Alarms (hyper/hypo) 7-day lifetime	Remote monitoring Wireless communication with smartphone Calibration every 12 h	9% [29]
Medtronic		Trend marks Rate-of-change alerts Alarms (hyper/hypo) 6-day lifetime	Integration with Medtronic 530G insulin pumps Calibration every 12 h	13.6% [30]
		Trend arrows Rate-of-change alerts Alarms (hyper/hypo) 7-day lifetime	Integration with Medtronic 670G insulin pumps Calibration every 12 h	9.1% [31]
Senseonics		Trend arrows Rate-of-change alerts Alarms (hyper/hypo) 90-day lifetime	Communication with smartphone Sensor inserted under the skin	11.6% [32]