system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
The clearance of drug means
assistant
The correct answer is  Clearance of a substance is the volume of plasma cleared of the substance in unit time ie in one minute. (REF: TEXTBOOK OF MEDICAL PHYSIOLOGY GEETHA N 2 EDITION, PAGE NO - 353)