What is a normal result for a hemoglobin A1c test?

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A normal result for a hemoglobin A1C test is less than 5.7%. The hemoglobin A1C (HbA1C) test is a way to get an average of how well blood glucose (sugar) has been controlled for the past three months. The test measures the percentage of how much hemoglobin (red blood cells) has been glycated, or "hooked up," with glucose. The normal role of hemoglobin in red blood cells is to carry oxygen throughout the body. But when blood glucose levels increase, some of that glucose ends up sticking to hemoglobin. Since a red blood cell lasts about 120 days, the A1C test can give you a picture of how high your blood sugar has been on average for the last three months.

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Diabetes

Diabetes mellitus (MEL-ih-tus), often referred to as diabetes, is characterized by high blood glucose (sugar) levels that result from the body’s inability to produce enough insulin and/or effectively utilize the insulin. Diabetes ...

is a serious, life-long condition and the sixth leading cause of death in the United States. Diabetes is a disorder of metabolism (the body's way of digesting food and converting it into energy). There are three forms of diabetes. Type 1 diabetes is an autoimmune disease that accounts for five- to 10-percent of all diagnosed cases of diabetes. Type 2 diabetes may account for 90- to 95-percent of all diagnosed cases. The third type of diabetes occurs in pregnancy and is referred to as gestational diabetes. Left untreated, gestational diabetes can cause health issues for pregnant women and their babies. People with diabetes can take preventive steps to control this disease and decrease the risk of further complications.
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