HbA1c
Alternative names: Glycated Hemoglobin, A1c, HbA1C, Glycohemoglobin
Clinical Summary
MedlinePlus describes an HbA1c test as a measure of your average blood sugar levels over the past 3 months.
Higher-Than-Range Notes
MedlinePlus notes an HbA1c of 5.7% to 6.4% indicates prediabetes, and 6.5% or higher indicates diabetes.
Lower-Than-Range Notes
MedlinePlus notes very low HbA1c levels can occur in patients on aggressive glucose-lowering therapy or with certain blood disorders.
Commonly Measured Alongside
Longitudinal Tracking
Sign in to log and visualize your own HbA1c metrics over time.
General Reference Information: This definition is sourced from public health reference libraries for patient education. It is not intended to substitute professional medical diagnosis, clinical reviews, or treatment plans. Always consult with a qualified health provider regarding your laboratory results.