This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology and Reproduction, Subject name: Physiology
The arterial blood glucose concentration in normal humans after a meal is in the range of: 
Select and explain. 
A. 30 to 50mg/dL, B. 50 to 70mg/dL, C. 120 to 150 mg/dL, D. 220 to 250 mg/dL
C: 120 to 150 mg/dL
Answer: C: 120 to 150 mg/dL 
Explanation: Ans. C. 120 to 150 mg/dLUnlike patients who have diabetes, healthy humans are capable of keeping their blood glucose within a relatively narrow range after a meal, 120 to 150 mg/dL. Blood levels of 30 to 50 mg/dL and 50 to 70 mg/dL indicate hypoglycemia, and blood levels of 220 to 250 mg/dL and 300 to 350 mg/dL indicate hyperglycemia.