1. What is eAG (Estimated Average Glucose)?

eAG (Estimated Average Glucose) is a calculated value that represents your average blood sugar level over the past 2-3 months. It's derived from your HbA1c measurement and provides the result in the same units (mg/dL) as your daily blood glucose readings.

2. How Does the Calculator Work?

The calculator uses the eAG conversion formula:

Where:

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

Explanation: This formula converts HbA1c values from the IFCC standard (mmol/mol) to estimated average glucose levels that correspond to daily glucose meter readings.

3. Importance of eAG Calculation

Details: Converting HbA1c to eAG helps patients better understand their glucose control by translating the laboratory value into the same units they see on their daily glucose meter. This improves patient comprehension and engagement in diabetes management.

4. Using the Calculator

Tips: Enter your HbA1c value in mmol/mol (IFCC units). The calculator will provide your estimated average glucose in mg/dL, which corresponds to your daily glucose meter readings.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between HbA1c and eAG?
A: HbA1c is a measure of glycated hemoglobin percentage or mmol/mol, while eAG is the estimated average glucose level in mg/dL that corresponds to the HbA1c value.

Q2: Why are there different HbA1c units?
A: The IFCC standard uses mmol/mol, while the DCCT/NGSP standard uses percentage. This calculator converts from IFCC mmol/mol to eAG.

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

Q4: Should I use eAG instead of daily glucose monitoring?
A: No, eAG complements but doesn't replace daily glucose monitoring, which provides immediate feedback and helps detect glucose fluctuations.

Q5: What are target eAG levels for diabetes management?
A: Generally, an eAG below 154 mg/dL (HbA1c <7%) is recommended for most adults with diabetes, but individual targets should be set with your healthcare provider.