what is a1c vs glucose

A1C vs. Glucose: What's the Difference?

• A1C Test:

  • Measures your average blood sugar levels over the past 2-3 months.
  • Reflects the percentage of hemoglobin in your red blood cells that has glucose attached to it.
  • Used to diagnose prediabetes and diabetes, and to monitor long-term blood sugar control.
  • Reported as a percentage (e.g., 5.7% for prediabetes, 6.5% or higher for diabetes).

• Glucose Test:

  • Measures your current blood sugar level at a single point in time.
  • Often done through a finger prick or blood draw.
  • Used for daily monitoring of blood sugar, especially for people with diabetes.
  • Reported in mg/dL (e.g., 126 mg/dL or higher indicates diabetes).

Key Differences:

Aspect A1C Glucose

Time Frame 2-3 months Current moment
Purpose Long-term monitoring/diagnosis Immediate blood sugar levels
Measurement Percentage (%) mg/dL

Both tests are important for managing diabetes, but they serve different purposes. A1C provides a broader picture of blood sugar control, while glucose tests offer real-time insights.