Diabetes mellitus: The long way of standardization of HbA1c to the level of highest metrological order

Patricia Kaiser & Hans Reinauer
Glycated haemoglobin (HbA1c) measurements are used in clinical studies and for the management of diabetic patients. Various efforts were made to standardize the HbA1c measurements with consensus standards and standards based on a reference measurement procedure with external calibration. According to ISO 17511 a standard should meet highest accuracy possible, have a defined uncertainty of measurement and the calibration should be traceable to SI units. For HbA1c this has been realized using a LC-ID-MS procedure...