Tools of the Trade
It is inserted under the skin, and the needle pulls out, leaving behind a very thin wire. You manually input a current blood sugar reading from finger-pricking, and it then calibrates and begins checking your blood sugar on its own every six minutes. The round white part at the top is a wireless transmitter that, in turn, sends the readings right to my insulin pump, which will beep to alert me if my blood sugar falls below 75 or raises above 150. It requires a new calibration, or finger-prick reading, every six hours so it can stay accurate.