This compact and concise volume deals with all common laboratory investigations like urine, blood, semen and X-rays which are ordered in day-to-day practice. In this edition normal values have been incorporated and the chapters on blood and radiological diagnosis have been expanded. Many diseases with identical clinical presentation can only be differentiated by suitable investigations undertaken at the appropriate time and if doctor knows about their fallacy, specificity and reliability he has to interpret them in the light of the total clinical picture. When pushed in a blind corner these tests only direct the doctor in which direction to proceed. This handy book is helpful for students, physicians and medical laboratory technicians.