I recently had an A1c done at my internist. It was higher than I thought it should be (I use a Dexcom CGM). Then I went to my endo and had another A1c done (about 5 weeks later). It was one full percentage point lower and much more inline with my Dexcom. The endo’s office said they have had this happen with other patients with A1cs done at both of the places with that much or more of a variance. So how accurate are these tests anyway? I wonder if they’re even worth getting or maybe I should just go off my Dexcom.