This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Gynaecology & Obstetrics
Gestational diabetes is diagnosed by : 
Select and explain. 
A. Glucose tolerance test, B. Random blood sugar, C. Fasting and postprandial blood sugar, D. 24 hours blood glucose profile
A: Glucose tolerance test
Answer: A: Glucose tolerance test 
Explanation: Glucose tolerance test