what is hba1 blood test
Asked by: CuriousPatient123
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Community Answer
Answered by Dr. Emily 🩺
The HbA1c test, also known as the hemoglobin A1c or glycated hemoglobin test, is a blood test used to measure your average blood sugar 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 test measures the percentage of hemoglobin that is coated with sugar (glycated).
- Since red blood cells regenerate every 3 months, the test reflects your average blood sugar levels over that period.
Key Ranges:
- Normal: Below 5.7%
- Prediabetes: 5.7% to 6.4%
- Diabetes: 6.5% or above
Why It’s Important:
- It helps diagnose diabetes and prediabetes.
- It monitors how well your diabetes is being managed.
- It provides a long-term view of blood sugar control, unlike daily glucose tests.
Preparation:
- No fasting is required for the HbA1c test.
- It can be done at any time of the day.
For more details, consult your healthcare provider.