🍬 Estimated Average Glucose (eAG) from HbA1c
Convert HbA1c to estimated average glucose (eAG) with the ADAG formula.
Estimated Average Glucose (eAG) from HbA1c
HbA1c (%)
When to use
Translate HbA1c into an average glucose patients can relate to.
How it works
eAG (mg/dL) = 28.7 × HbA1c − 46.7; divide by 18 for mmol/L. Reflects mean glucose over ~ 2–3 months.
Key points
- Anemia, hemoglobin variants, recent transfusion and pregnancy alter the relationship.
- eAG complements but does not replace day-to-day glucose monitoring.
- Useful for patient education.
References
Decision support for licensed clinicians only; not a substitute for clinical judgement, diagnosis or local protocols.