1. What is the eAG Equation?

The eAG (estimated Average Glucose) equation converts HbA1c percentage to an estimated average glucose level in mg/dL. This provides a more intuitive understanding of blood glucose control for patients and healthcare providers.

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: The equation translates the HbA1c percentage, which reflects average blood glucose over 2-3 months, into an estimated average glucose value in mg/dL.

3. Importance of eAG Calculation

Details: eAG helps patients better understand their diabetes control by expressing it in the same units (mg/dL) used for daily glucose monitoring, making it easier to relate to their day-to-day glucose measurements.

4. Using the Calculator

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

5. Frequently Asked Questions (FAQ)

Q1: What is the relationship between HbA1c and average glucose?
A: HbA1c reflects average blood glucose levels over approximately 3 months. The eAG equation converts this percentage to an estimated average glucose value in mg/dL.

Q2: What are normal eAG values?
A: For non-diabetic individuals, eAG is typically below 115 mg/dL (HbA1c < 5.7%). Diabetes is diagnosed at eAG > 126 mg/dL (HbA1c ≥ 6.5%).

Q3: How accurate is the eAG calculation?
A: The equation provides a good estimate for most people, but individual variations in red blood cell lifespan and other factors can affect accuracy.

Q4: Can eAG replace daily glucose monitoring?
A: No, eAG provides an average but doesn't show glucose variability or hypoglycemic episodes. Daily monitoring is still essential for diabetes management.

Q5: Are there different equations for different populations?
A: The ADAG study derived this equation from a multi-ethnic population, making it generally applicable across different ethnic groups.