Low HbA1c in poorly controlled type 1 diabetes mellitus in a child.

Haemoglobin A1c (HbA1c), glycosylated haemoglobin, is a crucial tool in monitoring long-term glycaemic control in diabetic patients. Studies have also demonstrated that it has a role in the prognostication of diabetic microvascular complications. However, certain conditions can interfere with HbA1c interpretation. Haemoglobin variants and disorders are important conditions that can lead to HbA1c misinterpretation. In this report, we describe an uncontrolled diabetic child who was found to have a low value of HbA1c and how this affected the clinical decisions regarding his management.