what is a glycated hemoglobin test
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Community Answer
Answered by Dr. HealthMetrics
The glycated hemoglobin test, also known as the HbA1c test or A1C test, is a blood test that measures your average blood sugar (glucose) levels over the past 2 to 3 months. It is commonly used to diagnose and monitor diabetes and prediabetes.
How It Works:
- Glucose in your blood attaches to hemoglobin, a protein in red blood cells.
- The A1C test measures the percentage of hemoglobin that is coated with sugar.
- Since red blood cells regenerate every 3 months, the test reflects your average blood sugar levels over that period.
A1C Results:
- Normal: Below 5.7%
- Prediabetes: 5.7% to 6.4%
- Diabetes: 6.5% or higher
This test is a key tool in diabetes management and does not require fasting before the test.