what is a1c test
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Community Answer
Answered by Dr. Emily Smith, MD 🩺
The A1C test, also known as the hemoglobin A1C or HbA1c test, is a blood test that measures your average blood sugar levels over the past 2 to 3 months. It is commonly used to diagnose prediabetes and diabetes, as well as to monitor how well you are managing your condition if you already have diabetes.
How Does the A1C Test Work?
- The test measures the percentage of your red blood cells that have sugar-coated hemoglobin.
- Hemoglobin is a protein in red blood cells that carries oxygen. When sugar enters your bloodstream, it attaches to hemoglobin.
- The higher your blood sugar levels, the more sugar-coated hemoglobin you will have.
A1C Test Results
- Normal: Below 5.7%
- Prediabetes: 5.7% to 6.4%
- Diabetes: 6.5% or above
Why Is It Important?
- The A1C test provides a long-term view of your blood sugar levels, unlike daily blood sugar checks, which only show your levels at a single point in time.
- It helps healthcare providers assess your risk for diabetes-related complications and adjust your treatment plan if necessary.
Things to Know
- You do not need to fast before taking the A1C test.
- Certain conditions, such as anemia or kidney disease, can affect the accuracy of the test.
For more detailed information, consult your healthcare provider.