This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Renal physiology, Subject name: Physiology
Least absorption out of the following through the kidney is for 
Select and explain. 
A. Glucose, B. Urea, C. Na, D. HCO3
B: Urea
Answer: B: Urea 
Explanation: Urea is minimally absorbed. Ref: guyton and hall textbook of medical physiology 12 edition page number:491,492,493