Medical diagnostics not only includes its function in serving as supporting evidence but also the techniques and instruments used in medical diagnosis such as ultrasound and X-rays are used as diagnostic tools. This book comprises detailed understanding of fatal and worldwide prevailing diseases such as tuberculosis, diabetes, hypertension, dengue, malaria, etc. Furthermore, through understanding of urine and blood analysis (haematology) are included which are relevant and applicable in the pathology laboratory, hospitals, etc. The text adequately illustrates the subject matter with the colour plates, line diagrams and specially compiled tables for substantiating important points. Each chapter concludes with the summary of the chapter, respective glossary, relevant questions and references. The book is designed for the undergraduate and postgraduate students, teachers, laboratory workers. It may also serve as a guide for practising doctors.