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Tubes and Additives

Phlebotomy evacuated containers

QuestionAnswer
Red top None
Red/Gray Marbled Clot activator (silica particles)/thixotropic gel
Yellow top SPS (prevents blood from clotting and stabilizes bacterial growth)
Gold Clot activator (silica particles)/thixotropic gel
Light blue Sodium citrate: removes calcium to prevent blood from clotting
Green Heparin (sodium/lithium/ammonium): inhibits thrombin formation to prevent clotting
Green-gray marbled Lithium heparin and gel for plasma separation
Light green Lithium heparin and gel for plasma separation
Yellow-gray marbled Thrombin
Orange Thrombin
Lavender EDTA: removes calcium to prevent blood from clotting
Gray Potassium oxalate and sodium fluoride: removes calcium to prevent blood from clotting while the fluoride inhibits glycolysis
Royal blue Sodium Heparin (also sodium EDTA); inhibits thrombin formation to prevent clotting
Created by: cskinner
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