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eAG Equation:
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The eAG (estimated average glucose) equation converts HbA1c values in mmol/mol to an estimated average glucose level in mg/dL. This helps patients and healthcare providers better understand what HbA1c results mean in terms of daily glucose levels.
The calculator uses the eAG equation:
Where:
Explanation: The equation provides a mathematical conversion between HbA1c measured in mmol/mol (IFCC units) and estimated average glucose levels that patients experience daily.
Details: Converting HbA1c to eAG helps patients better understand their diabetes control by relating it to the glucose meter readings they see daily, improving diabetes management and patient engagement.
Tips: Enter HbA1c value in mmol/mol (IFCC units). The value must be greater than 0. The calculator will provide the estimated average glucose in mg/dL.
Q1: What is the difference between HbA1c and eAG?
A: HbA1c reflects average blood glucose over 2-3 months, while eAG converts this percentage/number into the same units (mg/dL) as daily glucose meter readings.
Q2: Why are there different HbA1c units?
A: The UK uses mmol/mol (IFCC units) while some other countries use percentage (NGSP units). This calculator is specifically for the UK mmol/mol format.
Q3: How accurate is the eAG conversion?
A: The conversion provides a good estimate but individual variations in glucose fluctuations can cause differences between estimated and actual average glucose.
Q4: What are target eAG levels?
A: Generally, an eAG below 154 mg/dL corresponds to an HbA1c below 7% (53 mmol/mol), but individual targets should be set with healthcare providers.
Q5: Can this calculator be used for diabetes diagnosis?
A: No, this is an estimation tool only. Diabetes diagnosis should be made by healthcare professionals using appropriate diagnostic criteria.