This book is a comprehensive, short textbook. It presents the subject in a simple and easily understandable language, written in a concise, flexible and question and answer format. The book is intended to cover topics most commonly tested. It contains everything students need to know and to succeed undergraduate, PLAB and USMLE examinations. It is compiled and edited as per the syllabus prescribed by Medical Council of India and based on the question papers of Rajiv Gandhi University of Health Sciences, Bangalore. Though the book is mainly useful for MBBS, BDS and B.Sc (Nursing) students, it is also immensely useful for all other students of biochemistry.