how does a1c test work

The A1C test, also known as the hemoglobin A1C or HbA1c test, measures your average blood sugar levels over the past 2-3 months. Here's how it works:

• Hemoglobin and Glucose Binding: When sugar enters your bloodstream, it attaches to hemoglobin, a protein in your red blood cells.
• Measurement of Glycated Hemoglobin: The A1C test measures the percentage of your red blood cells that have sugar-coated hemoglobin.
• Time Frame: Since red blood cells regenerate roughly every 3 months, the A1C test reflects your blood sugar levels over that period.

Key Points:

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

The A1C test is a crucial tool for diagnosing and monitoring diabetes and prediabetes, but it should be used alongside other blood sugar monitoring methods for a comprehensive view of your glucose levels.