Estimated Average Glucose (EAG)

What is Estimated Average Glucose?

Estimated Average Glucose (EAG) translates HbA1c percentage into average blood glucose levels over the past 2-3 months. It provides a more intuitive understanding of long-term glucose control by expressing HbA1c in the same units as daily glucose meter readings.

Why is it Tested?

EAG helps patients and healthcare providers better understand HbA1c results by converting the percentage to familiar glucose units. This makes it easier to relate long-term glucose control to daily blood sugar monitoring and set realistic glucose targets.

Normal Ranges

EAG values correspond to HbA1c levels. General guidelines:

Normal: 97–125 mg/dL (HbA1c 5.0–6.4%)
Prediabetes: 126–152 mg/dL (HbA1c 5.7–6.4%)
Diabetes: >154 mg/dL (HbA1c ≥6.5%)

EAG represents a mathematical translation rather than a direct measurement, providing context for HbA1c interpretation.

Reference ranges vary by authority. Track yours across multiple standards with automatic unit conversions in LabsVault.

What do Abnormal Results Mean?

Abnormal results are not a diagnosis. Always discuss your results with a qualified healthcare provider before making any medical decisions.

Elevated EAG

Higher values indicate:

Poor long-term glucose control
Undiagnosed or poorly controlled diabetes
Need for medication adjustment
Lifestyle modification requirements

Optimal EAG

Lower values suggest:

Good glucose control
Effective diabetes management
Appropriate medication dosing
Successful lifestyle interventions

How to Track Over Time

EAG trends mirror HbA1c changes, reflecting glucose control over months rather than days. Comparing EAG to average daily glucose meter readings helps identify discrepancies and guides management adjustments in diabetes care.

Estimated Average Glucose