Endocrinology
HbA1c to Estimated Average Glucose (eAG)
Converts HbA1c percentage to an average daily blood glucose level.
&category=Endocrinology)
Enlarge
Parameters
HbA1c to Estimated Average Glucose (eAG) Result
--
Formula
eAG (mg/dL) = (28.7 × HbA1c) - 46.7
eAG (mmol/L) = eAG (mg/dL) / 18.015Clinical Pearls
Empowers patients with diabetes to relate their quarterly HbA1c lab result to the daily fingerstick or Continuous Glucose Monitor (CGM) values they are accustomed to seeing.
Limitations
The relationship between HbA1c and average glucose can be altered by conditions affecting red blood cell lifespan, such as hemolytic anemia, recent blood transfusion, or end-stage renal disease.