Community Answer

Answered by Dr. HealthMonitor 🩺

The Hemoglobin A1C (HbA1c) test 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
  • Monitor blood sugar control in people with diabetes

How It Works

  • Glucose in your blood attaches to hemoglobin, a protein in red blood cells.
  • The A1C test measures the percentage of hemoglobin coated with glucose.
  • Since red blood cells regenerate every 3 months, the 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 higher

Why It’s Important

  • It provides a long-term view of blood sugar levels, unlike daily glucose tests.
  • It helps healthcare providers adjust treatment plans for diabetes management.

For more details, consult your healthcare provider or visit trusted sources like the CDC.

Last updated: 1/12/2025

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