1. What is eAG?

Estimated Average Glucose (eAG) is a calculated value that represents average blood glucose levels over the past 2-3 months, derived from HbA1c measurements. It helps translate HbA1c percentages into more familiar mg/dL units used in daily glucose monitoring.

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: This linear equation provides an estimated average glucose value that corresponds to the HbA1c measurement, allowing patients to better understand their long-term glucose control in familiar units.

3. Importance of eAG Calculation

Details: eAG helps bridge the communication gap between healthcare providers and patients by translating the HbA1c result into the same units (mg/dL) that patients see on their daily glucose meters, making diabetes management more understandable.

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. The calculator will provide the corresponding estimated average glucose in mg/dL.

5. Frequently Asked Questions (FAQ)

Q1: Why convert HbA1c to eAG?
A: Converting HbA1c to eAG helps patients better understand their average blood glucose levels in the same units they use for daily monitoring, improving diabetes self-management.

Q2: What is the relationship between HbA1c and average glucose?
A: HbA1c represents the percentage of hemoglobin that has glucose attached to it, which correlates with average blood glucose levels over the previous 2-3 months.

Q3: How accurate is the eAG calculation?
A: The eAG calculation provides a good estimate of average glucose, though individual variations may occur due to factors like hemoglobin variants or conditions affecting red blood cell turnover.

Q4: What are target eAG values?
A: Target eAG values typically correspond to HbA1c targets. For example, an HbA1c of 7% corresponds to an eAG of approximately 154 mg/dL, which is a common treatment target for many adults with diabetes.

Q5: Can eAG replace daily glucose monitoring?
A: No, eAG provides an average value but doesn't show glucose variability. Daily monitoring is still essential for detecting highs and lows and making immediate treatment adjustments.