The clinical laboratory is the place where professionals and technicians in clinical analysis, analyze human biological samples that contribute to the study, prevention, diagnosis and treatment of diseases. It is also known as clinical pathology laboratory and uses methodologies from various disciplines such as clinical chemistry biochemically also called – Hematology, Immunology and Microbiology. In the clinical laboratory are obtained and They are studying various biological samples such as blood, urine, stool, synovial fluid (joints), cerebrospinal fluid, throat and vaginal swabs, among other types of muestras. A flock outpatient laboratories, as required examinations of hospitalized patients are made using samples taken in inpatient units. Consequently, their location will be preferably on the ground floor, with easy access to the receiving section of the Clinical File and to a lesser extent with the outpatient department.