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A1c Basics for People With Type 2 Diabetes

Relating A1c to eAG

It can be very useful to know how your A1c relates to an estimated average glucose (eAG), especially if you regularly monitor your blood sugar. See the following table for the conversions:
 
A1c (%)
eAG (mg/dL)
6
126
7
154
8
183
9
212
10
240
11
269
12
298
 
So, while the difference between an A1c of 6 and 8 might not initially seem like a big deal, when you look at it in terms of average blood glucose, you can see that it really is a significant difference (126 versus 183 mg/dL).
 

It's Just an Average

Keep in mind that the A1c test just portrays your average blood sugar levels; it doesn't show anything about your highs and lows. You could have a deceptively low A1c, even if you are doing a very poor job of controlling your blood sugar. Your blood sugar could be varying wildly, with dangerous highs and lows, but your A1c might look great. This is one of the reasons why A1c is just one part of the picture. You still need to monitor your blood glucose as your doctor recommends.
 
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