[Diabetes-talk] A1C question

[Mike Freeman]

Amy:

First, you should use the averages collected by your meter only as a 
*very* rough guide to your real average blood glucose because the 
averages depend very much on the times (fasting, before meals, one or 
two hours after meals, etc.) you take your readings. Strictly speaking, 
the only way to get your meter to truly give you an approximate average 
would be to start before a meal, measuring your bg every hour until the 
readings came back down to the premeal level or something equivalent. 
But the average can give you a very rough idea what's going down.

Second, the American Diabetes ASsociation has come up with something 
called the "estimated average glucose" (EAG) which relates your average 
blood glucose to your A1C. I know several people including, as I recall, 
David Mendosa, do not consider this new calculation necessary as it's 
just another way to state the A1C. However, the ADA seems to think that 
some people might relate to it better and thus be more motivated to pay 
attention to their bg readings and A1C. The jury is out on this in my 
view. In any event, you can read an article about it at:

http://www.forecast.diabetes.org/magazine/features/new-number

The actual calculation formula is: Estimated Average Glucose equals (A1C 
* 27.8) - 46.7 or, in words, take the A1C, multiply it by 27.8, then 
subtract 46.7 from the result. Thus, an A1C of 6.0 gives an EAG of 
120.1.

Seems to me Gary Scheiner who wrote "Think Like A Pancreas" uses the 
formula of multiplying A1C by 30, then subtracting 60. This gives 
something similar.

Hope this helps.

Mike Freeman


----- Original Message ----- 
From: "Amy Krout-Horn" <krouthorn at verizon.net>
To: <diabetes-talk at nfbnet.org>
Sent: Tuesday, May 19, 2009 7:55 PM
Subject: [Diabetes-talk] A1C question


Hi All:
Here's another question(I seem to be full of them tonight) Is there a 
chart available on line that shows what your HBA1C number translates to 
in mg/dl? For example, if the Prodigy says that your 90 day average is 
143 mg/dl, what A1C number is connected to it? Thanks.
Amy
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