what is a1c on blood test
Asked by: CuriousPatient123
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Community Answer
Answered by Dr. HealthMetrics 🩺
The A1C test, also known as the hemoglobin A1C or HbA1c 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 prediabetes and diabetes
- Monitor blood sugar control in people with diabetes
How It Works
- Glucose in your blood attaches to hemoglobin, a protein in red blood cells.
- The A1C test measures the percentage of your red blood cells that have glucose-coated hemoglobin.
- Since red blood cells regenerate every 3 months, the test reflects your average blood sugar levels over that period.
A1C Ranges
A1C Level Diagnosis
Below 5.7% Normal
5.7%–6.4% Prediabetes
6.5% or higher Diabetes
For people with diabetes, the goal is typically to keep their A1C below 7%, though this may vary based on individual health conditions.