This book comprises types of microorganisms, various tests (viz., typhoid, tuberculin, VDRL, pregnancy, and HIV tests), sterilization, and disinfectants. Different types of stains and staining procedures are explained. Blood and its clinical significance, Rh factor and blood grouping, blood collection, determination of RBCs, WBCs, platelets, and ESR, determination of glucose in the blood and urine samples, routine examination of urine samples, and estimation of total cholesterol, HDL, LDL, and triglycerides are discussed in a concise way. Colorimetry, microscopy, chromatography, immunochemical methods, gel electrophoresis, and the fundamentals of automation in clinical laboratories are all covered.