Comparison Between Dexcom G5 Mobile Continuous Glucose Monitoring (CGM) System and the FreeStyle Libre Flash Glucose Monitoring System

A Comparative Study on the Accuracy and Usability Between the Dexcom G5 Mobile CGM System and the FreeStyle Flash Glucose Monitoring System

1. The accuracy of the sensors (Dexcom G5 vs FreeStyle Libre Flash glucose monitoring) will be evaluated by simultaneous wearing of the 2 sensors during 2 weeks. During these 2 weeks the patients will do at least four capillary blood glucose measurements to compare with the sensor results.
2. Patient satisfaction will be evaluated using a questionnaire that will be completed after the Dexcom G5 sensor has been worn for 1 month.
3. The data recorded by the FreeStyle Libre Flash glucose monitoring system (average glucose,% above target, % within target, % under target, amount of hypoglycemia) in the month prior to the 2 weeks of double sensor wear will be compared to the same data recorded by the Dexcom G5 mobile CGM system during the first month of use.

Inclusion Criteria:

• Type 1 diabetes mellitus
• Treated by insulin injections

Exclusion Criteria:

• Other types of diabetes
• Treated with insulin pump