Medical syringes. These are S-Monovette sample tubes, which combine a syringe with a sample tube for safe and rapid collection of blood from a patient

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Medical syringes. These are S-Monovette sample tubes, which combine a syringe with a sample tube for safe and rapid collection of blood from a patient. In an emergency, a sample of blood may be needed quickly to determine the blood group in case a transfusion is needed; or for analysis to aid diagnosis of an illness. The lids of the tubes are colour-coded according to different haematological tests or the content of the tube. Pink tubes, for example, contain EDTA (ethylenediamine tetra-acetic acid), an anti- coagulant that will stop the blood from clotting before tests can be carried out on it.

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Photo credit: © LEWIS HOUGHTON/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

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