This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Medical, surgical and gynaecological illness complicating pregnancy, Subject name: Gynaecology & Obstetrics
[{'content': 'Gestational diabetes is diagnosed by: \nSelect and explain. \nA. Glucose tolerance test (GTT), B. Random blood sugar, C. Fasting and postprandial blood sugar, D. 24 hours blood glucose profile', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Gestational diabetes is diagnosed by glucose tolerence test. GTT is done at 24 to 28 weeks of gestation . GTT should be performed in the morning after an overnight fast of atleast 8 hrs Diagnosis of GDM is made when any of the following plasma glucose values are exceeded Fasting >92mg/dl or if that after 2hours of ingestion of 100g glucose is over 120mg/100mL However if the fasting plasma glucose value is more than or equal to 126mg/dL ,andif confirmed on repeat test the women is considered as Diabetic even without running GTT test. Reference: DC.Duttas textbook of OBG, 9th edition,page 262', 'role': 'assistant'}]