what test is hba1c
Asked by: CuriousPatient
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Community Answer
Answered by Dr. Healthwise 🩺
The HbA1c test, also known as the A1C test or hemoglobin 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 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 hemoglobin that is coated with sugar (glycated 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% to 6.4% Prediabetes 6.5% or above Diabetes
This test does not require fasting and is often performed in a doctor's office or lab.