When a doctor conducts a set of tests on a patient, medical and clinical laboratory technologists and technicians are responsible for preparing and performing the tests in order to detect diseases or anomalies. These experts examine bodily fluids, tissues, and cells. They search for bacteria, parasites, and aberrant cells using sophisticated medical equipment. They also test cholesterol levels and cross-match blood samples for transfusions, and record their findings in reports or patient medical records. Because they frequently handle pathogenic microbe-contaminated samples and medical devices, they wear protective goggles, gloves, and masks to reduce the danger of transmission. Technologists and technicians at larger labs and hospitals sometimes specialise in areas such as blood tests or microbiology. The majority work full-time. In general, technologists supervise technicians' work. A bachelor's degree in medical technology or life sciences is required for technicians, and an associate's degree in clinical laboratory science is required for technologists. Some states mandate licensure, and companies frequently prefer certification. Work can be stressful, especially when complex exams must be performed precisely and in a short period of time. They get gratification, however, from knowing they've given doctors the information they need to save lives... or cure diseases.