what is hgb a1c

Hgb A1C, also known as Hemoglobin A1C or HbA1c, 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, as well as to monitor how well you are managing your diabetes over time.

How Does It Work?

• Glucose in your bloodstream attaches to hemoglobin, a protein in red blood cells.
• The A1C test measures the percentage of your red blood cells that have glucose-coated hemoglobin.
• Since red blood cells regenerate every 3 months, the test provides a long-term view of your blood sugar levels.

A1C Ranges:

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

Why Is It Important?

• It helps in diagnosing diabetes and prediabetes.
• It provides a more comprehensive picture of blood sugar control compared to daily glucose tests.
• It is a key tool in managing diabetes and preventing complications.

For more detailed information, you can refer to the CDC's guide on A1C testing.