On Jan. 4th of this year, I underwent a heart bypass. At this point I am recovering better than my doctors expected.
My questions is associated with notice from the hospital staff that I was diabetic and that my A1C level was at 10.2% post op.
I was shocked upon leaning this and since discharge have been monitoring my sugar levels daily, coupled with Metformin twice a day.
My average sugar level over the past 30 days ,(all data points), averages at 138, over 14 days at 125, and over 7 days at 121.
I have no known family history of diabetes. This is all new to me and am trying to understand and learn more about this.
My understanding is that a mathematical relationship exists between average glucose level and A1C.
A1C value, in percent, times 28.7, minus 46.7 = an "estimated" average blood glucose level in milligrams per deciliter.
Based on what I have read some degree of variance should be expected. But I would think that this would "get you in the ballpark".
Working backwards from my averages to obtain a "ballpark A1C" - I get 6.4%; 6.0% and 5.8% .
I do realize that I need more data. The 30 day average is based on 94 samplings
I just don't understand how I could be running at 10.2% post op, and have averages over 30 days to reflect and estimated A1C of 6.4%.
Can anyone shed some light on how a 30 day average at 138 mg/dl reflects a 10.2% A1C?
Thanks - G-Man