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eAG Calculation Formula:
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The eAG (estimated Average Glucose) calculation converts HbA1c values from mmol/mol to an estimated average glucose level in mg/dL. This helps patients and healthcare providers better understand daily glucose control based on HbA1c results.
The calculator uses the eAG formula:
Where:
Explanation: This formula provides a mathematical conversion from HbA1c (measured in mmol/mol) to an estimated average glucose level that represents the average blood glucose over the previous 2-3 months.
Details: Converting HbA1c to eAG helps patients better relate to their diabetes management by translating the HbA1c result into more familiar glucose units (mg/dL), making it easier to understand daily glucose targets.
Tips: Enter HbA1c value in mmol/mol. The value must be a positive number. The calculator will provide the estimated average glucose in mg/dL.
Q1: Why convert HbA1c to eAG?
A: eAG helps patients understand their HbA1c results in terms of daily glucose measurements they're familiar with from self-monitoring.
Q2: What is the relationship between HbA1c and average glucose?
A: HbA1c represents average blood glucose over 2-3 months. The eAG calculation translates this percentage or mmol/mol value into mg/dL units.
Q3: How accurate is the eAG estimation?
A: The formula provides a good estimate for most people, but individual variations in red blood cell lifespan and other factors can affect accuracy.
Q4: Should eAG replace HbA1c monitoring?
A: No, eAG is a derived value meant to help understanding. HbA1c remains the gold standard for long-term glucose monitoring.
Q5: Are there different formulas for different units?
A: Yes, different formulas exist for converting HbA1c from percentage to mmol/mol and to eAG. This calculator uses the standard formula for mmol/mol to mg/dL conversion.