Blood plasma is the liquid component of blood, in which the blood
cells are suspended. Plasma is the largest single component of blood,
making up about 55% of total blood volume. The term serum refers
to blood plasma in which clotting factors (such as fibrin) have been
contains many vital proteins including fibrinogen, globulins and human
Fresh frozen plasma (FFP) is prepared from a
single unit of blood. It is frozen after collection and can be stored
for one year from date of collection. FFP contains all of the
coagulation factors and proteins present in the original unit of blood.
It is used to treat coagulopathies from warfarin overdose, liver
disease, or dilutional coagulopathy. FFP that has been stored more than
a standard length of time is re-classified as simply "frozen plasma",
which is identical except that the coagulation factors are no longer
considered completely viable.
Plasma was needed for the armed forces to help prevent breakage and
made transport, packaging, and storage much simpler. The dried plasma
package came in two tin cans containing 400 cc bottles. One bottle
contained enough distilled water to completely reconstitute the dried
plasma contained in the other bottle. In about three minutes, the plasma
would be ready to use and could stay fresh for around four hours.