This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Glomerular Filtration, Renal Blood Flow, and Their Control, Subject name: Physiology
[{'content': 'What is implied, if a drug has more renal clearance than the GFR : \nSelect and explain. \nA. Drug is reabsorbed in the tubules, B. Drug is secreted in the tubules, C. Drug is excreted in bile, D. Drug is neither secreted, nor resorbed.', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. is \'b\' i.e. Drug is secreted in the tubules Logically, if a drug is more in renal clearance than the amount filtered by glomerulus, it has to be secreted in the kidney tubules." Tubular secretion - is the active transfer of organic acids and bases by two separate nonspecific mechanism which operate in the proximal tubules. If renal clearance of a drug is greater than 120 ml/min (g.f.r.), additional tubular secretion can be assumed to be occuring "Soif renal clearance is more than G.F.R.* - Tubular secretionIf renal clearance is less than G.F.R. * - Tubular reabsorption.If renal clearance is equal to G.F.R.* - The drug does not undergo either tubular sec. or tub. reabsorption.', 'role': 'assistant'}]