I started my Dexcom a couple months ago. My first two sensors were wonderful - after the first day, they perfectly matched my blood sugars (within 5 points) almost all the time for 20+ days. However, on Monday, I put in a third sensor. For a couple of hours, it gave me readings that were about 30 or 40 points from my meter before it gave me the ???. After 12 hours or so, the ???s finally stopped, but it still isn’t as accurate as my previous sensors - it’s almost always at least 20 points off and frequently 50 or more. I keep hoping that, if I just give it more time, it will become more accurate, but it isn’t.
I don’t know if I’m spoiled because my previous two sensors were so great or if I should request a replacement for this one. So do most sensors usually have you 20 to 80 points off? Am I expecting too much from my Dex? Or is this kind of a bad sensor?
Thanks, my experts!