A1C
Purpose and Use
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The A1C test is widely used to diagnose prediabetes and diabetes, as well as to monitor how well someone with diabetes is managing their condition.
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It is especially valuable because it gives a long-term picture of blood sugar levels, unlike daily blood glucose checks, which offer only a snapshot.
How It Works
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When glucose enters the bloodstream, it attaches to hemoglobin in red blood cells; since these cells live about three months, the A1C result shows the average blood sugar level during that timeframe.
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Higher A1C levels indicate higher average blood sugar and thus a greater risk for complications of diabetes.
Test Numbers
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A normal A1C level is below 5.7 percent.
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Levels between 5.7 and 6.4 percent indicate prediabetes.
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An A1C level of 6.5 percent or higher on two separate tests suggests diabetes.
This test is a crucial tool for both diagnosis and ongoing management of diabetes and prediabetes
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