6.9. I have had a CGM for just over a year - what a revelation! I am perimenopausal, and unstable hormones mean unstable BGs. My pre-CGM A1c (using Humulin N and R!!!) was usually around 8.3.
I got a 670G pump in September, and totally failed at auto-mode. For auto mode to work, you have to have a “normal”, and I just don’t. It bases it’s behavior on the previous 7 days, and the previous 7 days might be slightly different, or they might be as much as one-third higher or lower basal levels. Try going from 0.75 U/hr to 0.45U/hr (for the same time of day) in less than 2 days … or even 2 hours sometimes. Auto mode can’t figure it out. You only have one basal pattern, and auto-mode keeps giving the wrong micro-boluses, and demanding more BG tests. (ARGH!)
But, with the assistance of the CGM, I have learned how my body’s hormones effect the BGs. With 5 basal patterns and the use of temp-basals, I am now 81% in range. Woohoo!!! Each time in the last year that I have had labwork done, my A1c has gotten 0.2 to 0.5% lower.
Progress is being made! My doctor is happy with my being below 7.0%. I would like to get lower, but my hormones make it tricky. My CDE says that I am a nervous patient, because I do major note-taking, and I keep going over the notes to find patterns, and making small adjustments and experiments. With my hormones, I told her, I don’t consider that to be nervous. It’s how I learn.