Hemoglobin A1c (A1C) estimates your average blood sugar over about 3 months. It helps guide diabetes goals and treatment changes. A1C has been a cornerstone of diabetes management since the 1990s. The ...
Verywell Health on MSN
What Happens When A1C Levels Are Too High?
A1C measures how well your body is controlling your blood sugar over the past few months. An A1C of 6.5% or higher on two ...
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