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: Physiology
[{'content': 'True regarding glucose tolerance test are all except: September 2007 \nSelect and explain. \nA. Can be done in fasting as well as post prandial state, B. 1 gram of glucose/kg body weight is administered, C. Glucose levels are checked after 2 hours, D. Diagnosis of diabets mellitus can be established', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. A: Can be done in fasting as well as post prandial stateOral GTT is done in fasting state.Blood glucose values return back to below normal in non diabetics in about 2 hours whereas blood glucose in diabetics rises too much and levels fall back to control only after 4-6 hours.', 'role': 'assistant'}]