1. What is the A1C to eAG Conversion?

The A1C to eAG conversion translates hemoglobin A1C percentage values to estimated average glucose levels in mg/dL. This helps patients and clinicians understand A1C results in terms of daily glucose measurements.

2. How Does the Calculator Work?

The calculator uses the ADA-recommended formula:

Where:

• \( A1C \) — Glycated hemoglobin percentage
• \( eAG \) — Estimated average glucose (mg/dL)

Explanation: The formula is derived from the ADAG (A1C-Derived Average Glucose) study that established the linear relationship between A1C and average glucose levels.

3. Importance of eAG Calculation

Details: Converting A1C to eAG helps patients better understand their glucose control by relating it to their daily blood glucose meter readings. It bridges the gap between long-term (A1C) and short-term (self-monitoring) glucose measures.

4. Using the Calculator

Tips: Enter A1C percentage value (typically between 4-14%). The calculator will provide the corresponding average glucose level in mg/dL.

5. Frequently Asked Questions (FAQ)

Q1: Why convert A1C to eAG?
A: Many patients find it easier to understand their glucose control when expressed as an average glucose value similar to their daily meter readings.

Q2: How accurate is the conversion?
A: The formula is based on extensive research, but individual variations exist. It represents population averages, not exact values for every individual.

Q3: What's the normal range for eAG?
A: For non-diabetics, eAG is typically 70-126 mg/dL (A1C 4-6%). Diabetes management targets are individualized but often aim for <154 mg/dL (A1C <7%).

Q4: Does this work for all A1C methods?
A: The formula applies to A1C tests standardized to the DCCT/NGSP reference method. Some newer methods may require different conversion factors.

Q5: Can I use this for pregnancy?
A: The relationship between A1C and glucose may differ during pregnancy due to changes in red blood cell turnover. Consult your healthcare provider.