I am currently using the Abbott Libre 3 continuous glucose monitor (CGM). In addition to falling off my arm easily and wasting a sensor, it is also wildly inaccurate. I have been checking the last two sensors with a finger prick glucose meter, and the readings can be off by more than 50 points high or low. That makes a huge difference when you are shooting fast-acting insulin on a sliding scale.
Additionally, I have received several low glucose alarms on my phone from the connected CGM. The alarm is loud and is designed to wake up so you can take action to prevent hypoglycemia. However, this one is fake. I checked with the regular glucose monitor and it read 114 mg/dL, well within the normal range. If you check the app again, the low reading is gone from the chart. How am I supposed to trust any readings from the CGM sensor? Am I risking shooting too much insulin before each meal? Or not enough?
Life with chronic diseases 