Using a continuous glucose monitor (CGM) can help you catch spikes and dips you may have missed between tests with your meter. And with the data downloaded from your device, you can use trends to better manage your diabetes. So, what is a CGM? The device uses a sensor to measure glucose levels in the fluid just under the skin (very similar to glucose levels in the blood). The sensor transmits the results to a handheld receiver or insulin pump every few minutes, so you know what your glucose levels are throughout the day. Depending on the CGM you choose, you'll wear the sensor for three to seven days before replacing it. You'll insert the sensor much like an infusion set for an insulin pump, with a handheld applicator and special adhesive tape.
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