Involves testing done on clinical specimens in order to get information about the health of a patient as pertaining to the diagnosis, treatment, and prevention of disease. Incumbents may work in the general laboratory settings of chemistry, blood banking, hematology, microbiology or immunology, or be engaged in highly technical sub- specialty areas such as enzyme assay, steroid assay, radioimmunoassay, toxicology, electrophoresis, rheumatology, tissue typing, and virology.
