1. What is the eAG Equation?

The eAG (estimated Average Glucose) equation converts HbA1c percentage to an average glucose value in mg/dL. This provides a more intuitive understanding of blood glucose control over the previous 2-3 months.

2. How Does the Calculator Work?

The calculator uses the eAG equation:

Where:

• \( HbA1c \) — Glycated hemoglobin percentage
• 28.7 — Conversion coefficient
• 46.7 — Adjustment factor

Explanation: This linear equation provides an estimated average glucose level that corresponds to the HbA1c measurement, helping patients better understand their diabetes control.

3. Importance of eAG Calculation

Details: Converting HbA1c to eAG helps patients relate their long-term glucose control to daily glucose meter readings, improving diabetes management and treatment adherence.

4. Using the Calculator

Tips: Enter HbA1c value as a percentage (e.g., 6.5). The value must be greater than 0 for accurate calculation.

5. Frequently Asked Questions (FAQ)

Q1: Why convert HbA1c to eAG?
A: eAG provides glucose values in familiar units (mg/dL) that patients recognize from their daily glucose monitoring, making HbA1c results more meaningful.

Q2: How accurate is the eAG conversion?
A: The equation provides a good estimate for most patients, though individual variations in glucose patterns may cause some discrepancy between eAG and actual average glucose.

Q3: What is the relationship between HbA1c and average glucose?
A: HbA1c represents the percentage of hemoglobin that has glucose attached, reflecting average blood glucose levels over the previous 2-3 months.

Q4: Are there limitations to this conversion?
A: The conversion may be less accurate in patients with hemoglobin variants, anemia, or other conditions that affect red blood cell lifespan.

Q5: What are target eAG values?
A: Generally, an eAG below 154 mg/dL corresponds to HbA1c < 7%, which is the target for many adults with diabetes.