Hemoglobin A1C Is a Yardstick for Measuring Diabetes Control

When hemoglobin A1C is close to normal, the risk of complications is reduced (1:35)
William Bornstein, MD, explains that the hemoglobin A1C test measures blood sugar in recent months.

Hemoglobin A1C is a test that measures how much glucose is stuck to your red blood cells, and it's a proxy for how well your blood sugar has been controlled in the last two to three months (the lifespan of a red blood cell). Experts generally recommend an A1C of less than 7% to reduce your risk of complications.

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