how to figure a1c

The A1C test measures your average blood sugar levels over the past 2-3 months. Here’s how to understand and calculate your A1C:

• A1C Test: This blood test measures the percentage of your red blood cells that have sugar-coated hemoglobin. The result is given as a percentage.
• Normal Range: Below 5.7%
• Prediabetes Range: 5.7% to 6.4%
• Diabetes Range: 6.5% or above

You can also estimate your average blood sugar (eAG) from your A1C using the following table:

A1C % eAG (mg/dL)

6 126
7 154
8 183
9 212
10 240

To get your A1C tested, visit a healthcare provider. No fasting is required for the A1C test, but other tests (like cholesterol) may require fasting.