Laboratory Medicine, in its many and diverse specializations, is today an indispensable support for clinicians in the diagnosis and follow-up of patients. Technological development over the past two decades and the continuous discovery of new techniques for assaying elements that regulate the body's functions make it possible to diagnose and monitor the patient's response to treatment. Laboratory Medicine is developed in several specialized areas, such as pathological anatomy, immunohematology, microbiology, genetics, stem cell culture, proteomics, forensic medicine, metabolic medicine, intraoperative extemporaneous diagnostics, antiblastic drug preparation, and biomedical research. It is an ever-evolving dynamic profession, enriching learning with innovative methodologies.