Community Answer

Answered by Dr. Healthwise 🩺

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 you are managing your diabetes over time.

How It Works:

  • 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 Ranges:

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

Why It’s Important:

  • The A1C test provides a long-term view of blood sugar control, unlike daily blood sugar checks, which only show a snapshot of your levels at a single point in time.
  • It helps healthcare providers adjust treatment plans and set personalized A1C goals, typically aiming for less than 7% for most people with diabetes.

Factors Affecting A1C Accuracy:

Certain conditions or factors can affect the accuracy of the A1C test, including:

  • Anemia
  • Kidney or liver disease
  • Blood disorders (e.g., sickle cell anemia)
  • Pregnancy
  • Certain medications

If you have any of these conditions, inform your doctor, as alternative tests may be needed.

Last updated: 1/12/2025

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