i think that it contains white blood cells proteins and platelets
Platelets
platelets cause blood clotting
we can say that blood clotting is a function of blood because plasma is involved in blood cloting and plasma is a consituent of blood.
Blood cannot clot so quickly that it actually prevents a successful blood draw. If that were the case, you entire vascular system would be one giant clot. The only reason that a phlebotomist is...