It is a medical specialty that is concerned with the diagnosis of disease based on the laboratory analysis of bodily fluids such as blood and urine, and tissues using the tools of chemistry, microbiology, hematology and molecular pathology. Pathologists are doctors who diagnose and characterize disease in living patients by examining biopsies . In addition, pathologists interpret medical laboratory tests to help prevent illness or monitor a chronic condition. The vast majority of cancer diagnoses are made by pathologists. Pathologists examine tissue biopsies to determine if they are benign or cancerous. In addition, a pathologist analyzes blood samples from a patient’s annual physical and alerts their primary care physician to any changes in their health early, when successful treatment is most likely.