HbA1c and average glucose conversion

Result

Estimated average glucose (eAG)

6.3 mmol/L (114 mg/dL)

Estimated average glucose over 2–3 months, not a single or fasting glucose reading.

HbA1c

5.6 % (38 mmol/mol)

A reverse estimate from average glucose does not replace an HbA1c test or establish a diagnosis. Anaemia, altered red-cell lifespan, haemoglobin variants and pregnancy can affect the relationship. Diagnostic conclusions require clinical assessment and usually repeat confirmation.

Interpretation

HbA1c < 5.7%

A reverse estimate from average glucose does not replace an HbA1c test or establish a diagnosis. Anaemia, altered red-cell lifespan, haemoglobin variants and pregnancy can affect the relationship. Diagnostic conclusions require clinical assessment and usually repeat confirmation. Estimated average glucose over 2–3 months, not a single or fasting glucose reading. Reference ranges are population benchmarks from the cited sources. Laboratories use their own ranges, and interpretation depends on clinical context: discuss the result with your physician.