1. What is the eAG Formula?

The eAG (estimated Average Glucose) formula converts HbA1C percentage to an average glucose value in mg/dL. This helps patients and healthcare providers relate HbA1C results to daily glucose monitoring values.

2. How Does the Calculator Work?

The calculator uses the eAG formula:

Where:

• \( HbA1C \) — Glycated hemoglobin percentage
• 28.7 — Conversion coefficient
• 46.7 — Adjustment constant

Explanation: The formula provides an estimated average glucose level that corresponds to the HbA1C measurement over the previous 2-3 months.

3. Importance of eAG Calculation

Details: Converting HbA1C to eAG helps patients better understand their glucose control in terms of daily glucose measurements, facilitating diabetes management and treatment adherence.

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.

5. Frequently Asked Questions (FAQ)

Q1: What is the relationship between HbA1C and average glucose?
A: HbA1C reflects average blood glucose levels over the past 2-3 months. The eAG formula converts this percentage to an estimated average glucose value in mg/dL.

Q2: What are normal HbA1C values?
A: Normal HbA1C is below 5.7%. 5.7%-6.4% indicates prediabetes, and 6.5% or higher indicates diabetes.

Q3: How accurate is the eAG conversion?
A: The formula provides a good estimate for most individuals, but there can be individual variations due to factors like hemoglobin variants or red blood cell turnover.

Q4: Can this calculator be used for diabetes diagnosis?
A: No, this calculator is for educational purposes only. Diabetes diagnosis should be made by healthcare professionals using appropriate diagnostic criteria.

Q5: How often should HbA1C be tested?
A: For people with diabetes, HbA1C is typically measured every 3-6 months to monitor glycemic control.