Analyzing the chemical constituents of the patient's body fluidsCross-matching donor blood for transfusionsDetermining blood-clotting abnormalitiesTesting blood for drug levels to determine the effectiveness of particular treatmentsEvaluating test results for accuracy and interpreting them for the physicianOperating sophisticated lab equipment such as cell counters and microscopesStoring and retrieving equipment and chemicals according to the manufacturer's specificationsLogging data from medical tests and entering results into a patient's medical recordDiscussing the results and findings of lab tests and procedures with physicians