A professional who performs qualitative and quantitative chemical analyses of body fluids and exudates, following instructions, to provide information used in diagnosis and treatment of diseases. Responsibilities include:

• Tests specimens, such as urine, blood, spinal fluid, and gastric juices, for presence and quantity of sugar, albumin, drugs, toxins, and blood gases such as oxygen.
• Prepares solutions used in chemical analysis.
• Calibrates and maintains manual and computer-controlled analyzers, spectrophotometers, colorimeters, flame photometers, and other equipment used in quantitative and qualitative analysis.
• May take blood samples.