Review Article

A Survey of Insulin-Dependent Diabetes—Part I: Therapies and Devices

Table 2

Specification comparison of commercial blood glucose sensors.

FeaturesAbbott freestyle navigator [39]MiniMed paradigm real-time system [40]MiniMed guardian real-time system [41]DexCom [42]

AccuracyVariesConsensus error grid: 98.9% mard(mean) −19.7% (median) −15.5%Consensus error grid: 98.9% mard(mean) −19.7% (median) −15.5%Consensus error grid: 95.4% mard(mean) −49% (median) −15.9%

Startup initiation time10 hours2 hours2 hours2 hours

Sensor life5-day wear indicationAbove 72 hoursAbove 72 hoursAbove 72 hours

Calibration methodRequires calibration at 10, 12, 24, and 72 hours after the insertion of the sensorAlarms when calibration value is not entered on time. First and second calibration should be done for 2 and 6 hours after insertionAlarms when calibration value is not entered on time. First and second calibration should be done for 2 and 6 hours after insertionFirst calibration after 30 minutes and then for every 12 hours. Manual calibration is not possible

Frequency of displayEvery 1 minuteEvery 5 minutesEvery 5 minutesEvery 5 minutes

Transmitter memoryYes, the transmitter stores missed data for up to 40 minutesYes, the transmitter stores missed data for up to 40 minutesNo, transmission lost is data lost

Range of monitor to transmitter10 feet6 feet6 feet5 feet

Monitor batteriesUses 2 AAA batteries with replacement for every three monthsNo separate monitor required. Uses insulin pumpUses 2 AAA Batteries. Indication is set for chance of batteryUses rechargeable batteries

Monitor size3“ 2.5”Separate monitor is not available. Uses insulin pump for display3“ 2.7”3“ 2.5”

Alarms on user-set low and high thresholdsApplicableApplicableApplicableApplicable