what is an aic test

The A1C test, also known as the hemoglobin A1C or HbA1c 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 prediabetes and diabetes
• Monitor blood sugar control in people with diabetes

How Does It 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.

A1C Results and What They Mean

A1C Level Diagnosis

Below 5.7% Normal 5.7% to 6.4% Prediabetes 6.5% or higher Diabetes

Why Is It Important?

• The A1C test provides a long-term view of blood sugar levels, unlike daily glucose tests, which only show a snapshot.
• It helps healthcare providers assess how well diabetes is being managed and adjust treatment plans if necessary.

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