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Tubes used for blood bank (Pink and Lavender top) contain a chemical called EDTA that binds the calcium in blood, which is needed for blood to clot.

Red or Gold top tubes contain no chemicals to prevent the blood to clot, so the blood will clot with out being exposed to air.

Each specific department in the lab have different colored tubes with different chemical/no chemical in them depending on what test has been ordered.

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14y ago

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