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Glucose A1c Conversion Formula:
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The Glucose A1c Conversion calculates estimated Average Glucose (eAG) from Hemoglobin A1c percentage. This conversion helps translate A1c results into average blood glucose levels that patients can more easily understand and relate to their daily glucose monitoring.
The calculator uses the conversion formula:
Where:
Explanation: This linear equation was derived from data collected during the ADAG (A1c-Derived Average Glucose) study, which established the relationship between A1c levels and average glucose concentrations.
Details: Converting A1c to eAG helps patients better understand their diabetes control by relating it to the glucose numbers they see on their daily glucose meters. This improves patient engagement and diabetes self-management.
Tips: Enter the A1c value as a percentage (e.g., 6.5 for 6.5%). The value must be between 4-20% for meaningful results.
Q1: Why convert A1c to eAG?
A: Many patients find it easier to understand average glucose values in mg/dL (or mmol/L) rather than A1c percentages, as they relate to their daily glucose meter readings.
Q2: How accurate is this conversion?
A: The formula is based on extensive research from the ADAG study and provides a reliable estimate of average glucose levels corresponding to A1c values.
Q3: Does this work for all patients?
A: While generally accurate for most people, individual variations in red blood cell lifespan and glucose metabolism can affect the precision of the conversion.
Q4: What's the normal range for eAG?
A: For non-diabetic individuals, eAG is typically below 140 mg/dL (7.8 mmol/L), corresponding to an A1c below 6.0%.
Q5: Can I use this for gestational diabetes?
A: The conversion is generally applicable, but pregnancy can affect red blood cell turnover, so consult with your healthcare provider for interpretation.