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eAG Equation:
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The eAG (estimated Average Glucose) equation converts HbA1c percentage to an average blood glucose value 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 an estimated average glucose level that corresponds to the HbA1c measurement over the previous 2-3 months.
Details: Converting HbA1c to eAG helps patients better understand their diabetes control in familiar glucose units, improving communication between patients and healthcare providers about treatment goals.
Tips: Enter HbA1c value as a percentage (e.g., 6.5 for 6.5%). The value must be greater than 0.
Q1: What is the relationship between HbA1c and average glucose?
A: HbA1c represents the average blood glucose level over the past 2-3 months. The eAG conversion provides this average in the same units used for daily glucose monitoring.
Q2: What are normal eAG values?
A: For non-diabetic individuals, eAG is typically below 140 mg/dL (HbA1c < 6.0%). Diabetes treatment goals vary but often aim for eAG below 154 mg/dL (HbA1c < 7.0%).
Q3: How accurate is the eAG conversion?
A: The conversion is based on large clinical studies and provides a good estimate, but individual variations in glucose patterns may cause differences between calculated eAG and actual average glucose.
Q4: Can eAG be used for all patient populations?
A: The equation works well for most patients, but may be less accurate in conditions that affect red blood cell turnover, such as anemia, hemoglobin variants, or recent blood transfusions.
Q5: Should eAG replace daily glucose monitoring?
A: No, eAG complements but does not replace daily glucose monitoring, which provides immediate feedback on glucose levels and helps adjust therapy in real-time.