The Medical Laboratory Scientist examines and analyzes body fluids, tissues and cells. Work involves recognition and identification of bacteria, parasites and other organisms; analysis of chemical contents of fluids; measurements of haemoglobin and other constituents of blood; examination of cells obtained from the blood and other tissues; processing and preparing tissue sections for microscopic diagnosis; and cancer screening. He or she therefore performs complex haematological, immunological, chemical, biological, microscopic and microbiologic tests for diagnosing disease and monitoring patient treatment and research into the causes, development and treatment of disease.

The Medical Laboratory Scientist also analyzes the test results and discusses them with the pathologist and other medical staff. He or she uses, maintains and troubleshoots sophisticated laboratory equipment used to perform diagnostic tests. Part of his or her function is to supervise other technical staff who work in the medical laboratory, undertake/participate in research in laboratory test development, experimental design, administration and education, increasing their knowledge as laboratory techniques develop and research transforms the cutting edge of science and medicine.