what blood test is hba1c

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 diabetes management

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 Results:

• Normal: Below 5.7%
• Prediabetes: 5.7% to 6.4%
• Diabetes: 6.5% or above

This test does not require fasting and is often performed in a doctor's office or lab.