1
Heparin
to prevent abnormal blood clots due to conditions such as heart disease
2
Acid-citrate-dextrose (ACD)
preserves donated blood for blood transfusions
3
Coumadin
-warfarin
-ties up Vit K
4
Lithium heparin
Found in green tubes that are used to prevent clotting and preserve cellular morphology for clinical pathology tests