Congrats on breaking the 6.0% threshold, @Timothy! It’s always nice to receive independent confirmation of all your daily efforts.
Regarding correlation between a population measure like A1c or even Dexcom’s Glucose Management Indicator (GMI), I think there’s always a range that applies. My A1c number was always about 0.5% above what the average BG taken from my CGM predicted. Some people correspond precisely since they’re at the top of the bell-curve.
With the GMI, my A1c is closer, within 0.1% or so. I put more faith in the Dexcom CGM average along with a low standard deviation and high % time in range as the truest representation of my overall glucose experience.
When I went to my quarterly endo appointment one week early yesterday, the medical assistant told me Medicare would not pay for a point of care A1c test until a week later. When the doctor arrived I told him that I’m not very interested in that number anyway and he agreed that he didn’t need it, either.
A1c is a very difficult test to pin down. The new methods are so very different than just 10 years ago.
I was a lab scientist for a lot of years. We did the test with a latex method in a biochemicle analyzer. And then to an hplc (chromatography)
And now most labs use that same technology as the ones in the drugstore. A completely encased cartridge that is read by a small machine.
I was very impressed with the old methods.
The new ones I don’t know. But likely you are already getting something similar at the lab.