Abnormal hemoglobin Elevated hemoglobin A1c 2016-01-12T17:02:43Z Increased HbA1c levels An increased concentration of hemoglobin A1c (HbA1c), which is the product of nonenzymatic attachment of a hexose molecule to the N-terminal amino acid of the hemoglobin molecule. This reaction is dependent on blood glucose concentration, and therefore reflects the mean glucose concentration over the previous 8 to 12 weeks. The HbA1c level provides a better indication of long-term glycemic control than one-time blood or urinary glucose measurements. UMLS:C4073162 Elevated glycated haemoglobin Elevated glycosylated haemoglobin Elevated haemoglobin A1c Elevated HbA1c Elevated glycated hemoglobin Elevated glycosylated hemoglobin