“…Since the beginning of the third millenium, CGMS ™ , Medtronic Minimed, Northridge, CA, USA 3 and STS system, Dexcom, San Diego, CA, USA 4,5 , have made CGM, available for thousands of persons with diabetes. The transcutaneous CGMS ™ sensor is labeled to measure the glucose concentration in interstitial fl uid for up to three days after insertion even though it remains stable for a longer period [5][6][7][8][9][10][11] . On the other hand, the potential risks of adverse events due to longer insertion time should be taken into consideration.…”