This is the revised and updated edition, written in a very lucid and simple language with a major goal to provide a book to the students of medical laboratory technology to describe and illustrate clinical biochemistry that forms a part of the subject. Most of the chapters have been thoroughly revised and updated keeping in mind the recommended syllabus and needs of the students. Some new tables have been added in many chapters. Clinical relevance of the subject has also been provided at different places to help the students correlate basics of the subject with a clinical point of view. The book will not only help the students to have a better grasp of the subject but also lay a strong foundation for integration of the biochemical processes in clinical subjects, thus helping them in their journey to become medical technologists.