Many countries have implemented, or are considering, a change in hemoglobin A1c (Hb A1c) units from traditional percentage values [Diabetes Control and Complications Trial (DCCT)] to the new Système International d'Unités (SI) unit in millimoles per mole. Concern exists that such a large alteration in numeric values might lead, through confusion, to a deterioration in patients' glycemia. This study has assessed Hb A1c in the year before and after the change of units in a UK diabetes population.
Glycemic Control in the 12 Months following a Change to SI Hemoglobin A1c Reporting Units
Source: Clinical Chemistry
Image credits: Diabetes New Zealand and everybody
Art and Science of Laboratory Medicine