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eAG Formula:
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The HbA1c to eAG (Estimated Average Glucose) conversion provides an estimated average blood glucose level based on hemoglobin A1c percentage. This helps patients and healthcare providers understand what the A1c value means in terms of daily glucose measurements.
The calculator uses the ADAG (A1c-Derived Average Glucose) formula:
Where:
Explanation: This formula converts the percentage-based A1c measurement into an estimated average glucose value that corresponds to daily blood glucose monitoring readings.
Details: Converting A1c to eAG helps patients better understand their diabetes control by relating the long-term A1c measurement to the daily glucose values they monitor. This improves patient engagement and diabetes management.
Tips: Enter the HbA1c percentage value. The calculator will provide the estimated average glucose in mg/dL. Valid A1c values are typically between 4-15%.
Q1: What is the relationship between A1c and average glucose?
A: A1c represents the average blood glucose level over the past 2-3 months. The eAG conversion provides that average in the same units (mg/dL) as daily glucose monitoring.
Q2: How accurate is the eAG conversion?
A: The formula is based on extensive research and provides a good estimate, but individual variations may occur due to factors like hemoglobin variants or red blood cell turnover.
Q3: What are target eAG values?
A: For most adults with diabetes, the target A1c is <7% (eAG <154 mg/dL), but individual targets should be set with healthcare providers based on individual circumstances.
Q4: Can this calculator be used for diagnosis?
A: No, this calculator is for educational purposes only. Diabetes diagnosis and management should be done under medical supervision.
Q5: Why are there different conversion formulas?
A: The ADAG formula used here is the most widely accepted, but some studies suggest slight variations. This formula is recommended by major diabetes organizations.