eAG (mmol/L) details
What eAG (mmol/L) shows
Estimated average glucose, or eAG, is not measured directly. It is calculated from your hemoglobin A1c result using a standard formula, and this version reports it in mmol/L, the unit used in many countries and on many glucose meters. Because A1c reflects blood sugar over roughly the past two to three months, eAG translates it into an approximate average blood sugar. A higher value means higher average glucose, as seen in prediabetes and diabetes. Anything that changes red blood cell lifespan, such as anemia, blood loss or some hemoglobin variants, can make A1c and eAG less accurate.
Tests that include eAG (mmol/L)
This test combines the measurement of Hemoglobin A1c (HbA1c) with the Estimated Average Glucose (eAG). The American Diabetes Association (ADA) suggests getting HbA1c twice a year if your blood sugar is stable, and every three months if it's not well controlled. The eAG translates the HbA1c percentage into the same units used by daily blood sugar tests (mg/dL or mmol/L), making it easier for patients to relate to their day-to-day glucose readings. This test provides clarity on how well blood sugar is controlled over time to guide treatment adjustments. High HbA1c and eAG levels indicate that a patient's blood sugar, suggesting a need for adjustments in treatment.
- Hemoglobin A1c (HbA1c) Reflects your average blood sugar over the past 2-3 months, based on how much sugar has attached to your hemoglobin. Key marker for diabetes diagnosis and monitoring.
- eAG (mg/dL) Estimated average glucose — your HbA1c result translated into the same units as a daily glucose meter reading, for easier comparison.
- eAG (mmol/L) Estimated average glucose (eAG) in mmol/L, calculated from your hemoglobin A1c to express roughly what your average blood sugar has been over recent months.
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