1. What is the eAG Equation?

The eAG (estimated Average Glucose) equation converts HbA1c percentage to an average blood glucose value in mg/dL. This provides patients with a more intuitive understanding of their 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 constant

Explanation: This linear equation was derived from large clinical studies that correlated HbA1c levels with average glucose measurements from continuous glucose monitoring.

3. Importance of eAG Calculation

Details: Converting HbA1c to eAG helps patients better understand their diabetes control by relating it to daily glucose meter readings, improving diabetes management and treatment adherence.

4. Using the Calculator

Tips: Enter HbA1c as a percentage (e.g., 6.5 for 6.5%). The value must be greater than 0. The result shows estimated average glucose in mg/dL.

5. Frequently Asked Questions (FAQ)

Q1: What is the normal range for eAG?
A: For non-diabetics, eAG is typically 70-126 mg/dL. For diabetics, target eAG depends on individual treatment goals but is often below 154 mg/dL (HbA1c < 7%).

Q2: How accurate is the eAG conversion?
A: The equation provides a good estimate for most people, but individual variations in glucose patterns can affect accuracy. It represents an average, not exact daily values.

Q3: Can I use this for pregnancy diabetes?
A: While the equation works mathematically, pregnancy has different glucose targets. Consult your healthcare provider for pregnancy-specific goals.

Q4: Why are there different conversion formulas?
A: Different studies have produced slightly different coefficients. The ADAG study formula (28.7×A1c-46.7) is widely accepted and used in clinical practice.

Q5: How often should HbA1c be tested?
A: Typically every 3-6 months for diabetics, depending on treatment stability and control. Annually for prediabetes screening.