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Blood sample analysis
Blood sample analysis. Blood samples being analysed in a medical laboratory. The containers are colour-coded for the test being carried out and the chemicals in the tube. From left the tubes are: citrate (green), EDTA (pink) and serum (orange). Blood is analysed for levels of components such as cholesterol and glucose, for pathogens such as bacteria and viruses, and to determine a person's blood group. EDTA (ethylenediaminetetraacetic acid) is used to prevent blood samples coagulating.
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