what is a glycated hemoglobin test

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.