Comparison Between Enlite and Flash Glucose Monitoring

1. The accuracy of the sensors (Flash vs Enlite glucose monitoring) will be evaluated with a standardized breakfast test. Patients receive a standardized breakfast. The usual insulin bolus will be administered at breakfast. After breakfast, a venous blood sample is taken for 2 hours every 15 minutes to determine the blood sugar. At the same time, the glucose value shown by the sensors will be noted. A comparison of the blood glucose value with the data recorded by the sensor can evaluate the accuracy of the sensor and also estimate the lag-time between the sensor glucose and the venous glucose. 2. Patient satisfaction will be evaluated using a questionnaire that will be completed after the Enlite sensor has been worn for 1 month. 3. The development of skin reactions will be checked by a short questionnaire, supplemented with a picture of possible skin phenomena. 4. The data recorded by the FreeStyle sensor (average glucose,% above target,% within target,% under target, amount of hypoglycemia) in the month prior to sensor switching will be compared to the same data recorded by the Enlite sensor during the first month of use.