Glycated haemoglobin as a screening test for abnormal glucose homeostasis in childhood obesity.

Aim: To estimate the proportion of type 2 diabetes mellitus and abnormal glucose homeostasis in childhood obesity and assess the predictive role of HbA as a diagnostic marker compared with oral glucose tolerance testing (OGTT).

Methods: A retrospective study in a tertiary paediatric hospital. Data were collected on all overweight or obese children who underwent routine OGTT between 2012 and 2016.