This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Medicine
Bilirubin is absent in urine because it is? 
Select and explain. 
A. Distributed in the body fat, B. Conjugated with glucoronide, C. Not filterable, D. d) Lipophilic
C: Not filterable
Answer: C: Not filterable 
Explanation: Bilirubin in the blood is normally almost all unconjugated and, because it is not water soluble, is bound to albumin and does not pass into the urine. Bilirubin is conjugated in hepatocytes. Reference : Davidson, 23rd Edition, page no : 851