Correlation of Glycated Hemoglobin and Glucose levels after Oral Glucose Tolerance test in gestational diabetes patients: A Cross Sectional study.

Gestational diabetes mellitus (GDM) is a prevalent and potentially serious condition which may put both mothers and neonates at risk. The current recommendation for diagnosis is the oral glucose tolerance test (OGTT). OGTT is a cumbersome test that is time consuming. So we want to test the utility of HbA1c as a screening tool in pregnancy for GDM. Aim: This study aimed to determine the usefulness of HbA1c test as a diagnostic tool for GDM as compared to the traditional criteria based on the OGTT. Materials and Methods: This study was done among 156 pregnant women of the age group of 20-40 years with gestational period of 24-28 weeks attending the Obstetrics and Gynecology OPD of Chettinad Hospital and Research Institute, Chengalpattu from July 2019 to December 2019. Results: The HbA1c values will be correlated with OGTT values using Pearson's correlation analysis and there was significant correlation between HbA1c and post glucose values (p value<0.05). ROC curve analysis done for HbA1c showed an area under the curve of 0.569. Conclusions: HbA1c may have a role in the diagnosis of GDM, but further studies among large populations might be required to approve the use of HbA1c instead of OGTT in the diagnosis of GDM. [ABSTRACT FROM AUTHOR]