Clinical pathology is the second major subdivision of the discipline of pathology after anatomic pathology. It is concerned with laboratory investigations for screening, diagnosis and overall management of diseases by analysis of blood, urine, body fluids and other specimens. The specialties included under the discipline of clinical pathology are clinical chemistry, hematology, blood banking, medical microbiology, cytogenetics and molecular genetics. However, scope of this book does not allow microbiology and genetics to be included in this book.