1. What is the eAG Formula?

The eAG (estimated Average Glucose) formula converts HbA1c percentage values to average glucose levels in mg/dL. This provides a more intuitive understanding of blood glucose control for diabetes management.

2. How Does the Calculator Work?

The calculator uses the eAG formula:

Where:

• \( HbA1c \) — Glycated hemoglobin percentage
• \( eAG \) — Estimated average glucose in mg/dL

Explanation: This linear equation was derived from extensive clinical studies comparing HbA1c levels with continuous glucose monitoring data.

3. Importance of eAG Calculation

Details: Converting HbA1c to eAG helps patients and healthcare providers better understand daily glucose control, as mg/dL units are more familiar from regular glucose monitoring.

4. Using the Calculator

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

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 formula provides a good estimate but individual variations exist. It's based on population averages from the ADAG study.

Q3: What are normal HbA1c and eAG values?
A: Normal HbA1c is below 5.7% (eAG < 117 mg/dL). Prediabetes: 5.7-6.4% (eAG 117-137 mg/dL). Diabetes: ≥6.5% (eAG ≥140 mg/dL).

Q4: Can I use this for diabetes management decisions?
A: This calculator provides estimates for educational purposes. Always consult with your healthcare provider for medical decisions.

Q5: Are there different conversion formulas?
A: Yes, some older formulas used different coefficients, but the 28.7x - 46.7 formula is the current standard recommended by major diabetes associations.