1. What is the ADA eAG Equation?

The ADA (American Diabetes Association) eAG equation estimates average glucose levels from HbA1c measurements. It provides a more intuitive understanding of glucose control by converting HbA1c percentage to estimated average glucose in mg/dL.

2. How Does the Calculator Work?

The calculator uses the ADA eAG equation:

Where:

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

Explanation: The equation converts HbA1c percentage to estimated average glucose levels, helping patients better understand their diabetes control in familiar glucose units.

3. Importance of eAG Calculation

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

4. Using the Calculator

Tips: Enter HbA1c value in percentage. The value must be valid (HbA1c > 0). The calculator will provide the estimated average glucose in mg/dL.

5. Frequently Asked Questions (FAQ)

Q1: Why convert HbA1c to eAG?
A: eAG provides glucose values in familiar units (mg/dL) that patients use with their glucose meters, making HbA1c results more understandable.

Q2: What are normal eAG values?
A: Normal eAG is generally below 154 mg/dL (corresponding to HbA1c < 7%). Diabetes is diagnosed when HbA1c ≥ 6.5% (eAG ≥ 140 mg/dL).

Q3: How often should HbA1c be measured?
A: For stable patients, every 3-6 months. For those with treatment changes or unstable control, more frequent monitoring may be needed.

Q4: Are there limitations to this conversion?
A: The equation provides an average estimate. Individual glucose patterns may vary, and the relationship may differ in certain populations.

Q5: Should eAG replace glucose monitoring?
A: No, eAG complements but does not replace regular glucose monitoring, which provides immediate feedback and helps detect hypoglycemia.