HbA1c, or glycated haemoglobin, is a particular form of hemoglobin on which a glucose molecule has been attached, providing a proportional link between HbA1c and blood glucose levels.
The blood level measurement of glycated haemoglobin gives an idea of the average blood glucose level over the past two to three months. Its dosage is used in the diagnosis of diabetes and for monitoring the glycemic balance and thus evaluate and adapt diabetes treatment.