Effectiveness of Glycated Haemoglobin in the Diagnosis of Gestational Diabetes Mellitus among Pregnant Women in Port Harcourt, Nigeria.

Background: Gestational Diabetes Mellitus (GDM) is a common metabolic complication in pregnancy with a broad range of adverse foetal and maternal outcomes if not properly managed. Due to the difficult nature of the Oral glucose tolerance test (OGTT), the utilization of the Glycatedhaemoglobin (HbA1c) test as a simpler and acceptable alternative has been suggested. The aims were to determine the GDM prevalence, the diagnostic accuracy, the optimal cut-off point and the validity of the HbA1c in diagnosing GDM using OGTT as the gold standard in the University of Port Harcourt Teaching Hospital (UPTH).