The pregnant diabetic patients were seen in the general antenatal clinics of the hospital and additionally attend the combined clinics. Routine investigations such as blood group, Rhesus identification, haemoglobin concentration were done at booking, while ultrasound was done to rule out congenital anomaly. Our institution does not routinely screen all pregnant women for gestational diabetes. Modified Glucose Tolerance Test (MGTT) was performed based on presence of risk factors either at booking or at 28 weeks gestation. Risk factors include obesity, first-degree relative with diabetes, previous GDM, previous history of macrosomic baby or stillbirth, and recurrent urinary tract infection (UTI) or vaginal infection. Blood was taken for fasting blood sugar (FBS) and 2-hour postprandial for glucose estimation using enzymatic method (glucose oxidase and peroxidase methods). Diagnosis of diabetes in pregnancy was confirmed in the group of patient with FBS equal or more than 6.0mmol/L and postprandial glucose level of more than or equal to 7.8mmol/L following ingestion of 75g glucose.