Evaluation of Thyroid Profile in Gestational Diabetes Mellitus

Introduction: Gestational diabetes mellitus (GDM) is when women without diabetes develop high blood sugar level during pregnancy. Materials and Methods: This study comprised 100 patients with GDM selected from Obstetrics and Gynaecology Department of Rajendra Institute of Medical Sciences, Ranchi. All these patients were clinically euthyroid at the time of assessment and there was no history of thyroid disorder. Results: Highest serum thyroid stimulating hormone value is 26.0 (mu IU/ml) and lowest values < 0.2 (mu IU/ml) among GDM patients. Highest values of free T4 is 15.0 (mu g/dl) and lowest value is 0.30 (mu g/L). Value of glycosylated hemoglobin in gestational diabetes is in the range of 4.4-12.8% which is statistically significant. 100 GDM patients were studied. 19% patients had raised thyroid hormone, 23% had low level, and 58% patients were euthyroid. Conclusion: The incidence of hypothyroidism is more in GDM compared to hyperthyroidism.