what does a1c test for

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 primarily used for:

• Diagnosing prediabetes and diabetes:
  • Normal: Below 5.7%
  • Prediabetes: 5.7% to 6.4%
  • Diabetes: 6.5% or above
• Monitoring diabetes management: It helps assess how well your blood sugar is controlled over time.

The test works by measuring the percentage of hemoglobin (a protein in red blood cells) that is coated with sugar. Since red blood cells regenerate every 3 months, the A1C test provides a long-term view of blood sugar levels.

For most people with diabetes, the target A1C level is below 7%, but this may vary based on individual health conditions.