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Glycosylated Hemoglobin Test
What is it? Overview Usage Side Effects and Warnings

What is Glycosylated Hemoglobin Test?

A glycosylated hemoglobin test (HbA1c) is a blood test that measures the amount of glycosylated hemoglobin in the blood. Hemoglobin is a protein found in the blood. Glycosylated hemoglobin means that glucose (sugar) has attached to the hemoglobin protein. The higher your blood sugar is, the more that glucose gets attached to your hemoglobin.

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HbA1c shows how high your blood sugar levels have been during the past three months. This can help your doctor determine how well you are controlling your diabetes . Your doctor may also use HbA1c to test you for diabetes.

Call Your Doctor

After the test, call your doctor if any of the following occurs:

  • Bleeding from the puncture site
  • Red, swollen, or painful puncture site
  • If you have not heard from your doctor in 1-2 weeks

In case of emergency, CALL 911.