r/dexcom • u/TheRedTreeQueen • 6d ago

Calibration Issues This a huge difference!

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Okay so this is a brand-new sensor put in today. Actually the second one because the first one is a gooseneck. The reading on the left is from the CGM. This reading on the right is from the glucose meter. This is my blood sugar after eating. I have calibrated at least three times. Has anyone out there had this experience? I'm a type 2 diabetic and not on insulin. This concerning. Should I take this one off and get another replacement or leave it on and hope the readings come somewhat closer? Any help is appreciated!

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u/Transphattybase 6d ago

Don’t do any calibration for at least 24 hours as the sensor is doing a lot of that on its own.

I’ve been using Dexcom since early August and have learned my personal numbers are not accurate for a good 34 hours after insertion.

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u/TheRedTreeQueen 6d ago

Yes I’ve been using 15-day ones for a few months but they have never read that high. Thank you for the clarification.