1. What is the ADA HbA1c to eAG Conversion?

The American Diabetes Association (ADA) HbA1c to eAG conversion formula translates HbA1c percentage values into estimated average glucose levels in mg/dL. This provides patients with a more intuitive understanding of their blood glucose control over the previous 2-3 months.

2. How Does the Calculator Work?

The calculator uses the ADA conversion formula:

Where:

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

Explanation: This linear equation converts the HbA1c percentage, which reflects average blood glucose over 2-3 months, into an estimated average glucose value in more familiar mg/dL units.

3. Importance of eAG Calculation

Details: Converting HbA1c to eAG helps patients better understand their diabetes control by translating the percentage into daily glucose measurement units they're familiar with, improving diabetes self-management and treatment adherence.

4. Using the Calculator

Tips: Enter the HbA1c value as a percentage (e.g., 6.5 for 6.5%). The calculator will provide the corresponding estimated average glucose in mg/dL.

5. Frequently Asked Questions (FAQ)

Q1: Why convert HbA1c to eAG?
A: Many patients find mg/dL units more meaningful than percentages, as they correspond to their daily glucose meter readings.

Q2: How accurate is the eAG conversion?
A: The formula provides a good estimate for most individuals, though there can be individual variations due to factors like red blood cell lifespan.

Q3: What are target eAG values?
A: For most adults with diabetes, target eAG is typically below 154 mg/dL, corresponding to an HbA1c below 7%.

Q4: Can this conversion be used for diagnosis?
A: No, diabetes diagnosis should be based on actual glucose measurements or HbA1c percentages, not the converted eAG value.

Q5: Are there limitations to this conversion?
A: The formula may be less accurate at extreme HbA1c values and in conditions that affect red blood cell turnover.