what is a normal average glucose

A normal average glucose level, as measured by the A1C test, typically falls within the following ranges:

• Normal: Below 5.7% (estimated average glucose: less than 117 mg/dL)
• Prediabetes: 5.7% to 6.4% (estimated average glucose: 117–137 mg/dL)
• Diabetes: 6.5% or above (estimated average glucose: 140 mg/dL or higher)

Here’s a quick reference table for A1C and estimated average glucose (eAG):

A1C (%) eAG (mg/dL)

5 97
6 126
7 154
8 183
9 212

For most people, maintaining an A1C level below 5.7% is considered healthy. However, individual targets may vary based on medical history and risk factors. Always consult your healthcare provider for personalized guidance.