This paper addresses concordance between glycated haemoglobin and fasting plasma glucose as the two most widely used diagnostic tests for type 2 diabetes.

Glycated haemoglobin (HbA1c) should not be interpreted in isolation; the measurement accuracy and other parameters, including treatment goals and comorbidities, need to be considered.

A Caucasian man aged 46 years, working as an oil rig area coordinator in remote South Australia, presented with incidental hyperglycaemia.