what is the ac1

The A1C test, also known as the hemoglobin A1C or HbA1c test, is a blood test that measures your average blood sugar levels over the past 2 to 3 months. It is commonly used to diagnose prediabetes and diabetes, as well as to monitor how well your diabetes is being managed.

How Does the A1C Test Work?

• The test measures the percentage of your red blood cells that have sugar-coated hemoglobin.
• Hemoglobin is a protein in red blood cells that carries oxygen. When glucose enters your bloodstream, it attaches to hemoglobin.
• The higher your blood sugar levels, the more glucose attaches to hemoglobin.
• Red blood cells regenerate every 3 months, which is why the A1C test reflects your average blood sugar over that period.

A1C Ranges:

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

Why Is It Important?

• The A1C test provides a broader picture of blood sugar control compared to daily glucose monitoring.
• It helps healthcare providers adjust treatment plans and set personalized A1C goals, typically aiming for less than 7% for most people with diabetes.

For more details, visit the CDC's A1C Test page.