Donating Plasma

Blood plasma is the liquid component of blood. Plasma is the largest single component of blood, making up about 55% of total blood volume. Blood plasma contains many vital proteins including fibrinogen, globulins and human serum albumin... [more]

Blood plasma is the liquid component of blood. Plasma is the largest single component of blood, making up about 55% of total blood volume. Blood plasma contains many vital proteins including fibrinogen, globulins and human serum albumin.

Serum refers to blood plasma in which clotting factors (such as fibrin) have been removed naturally by allowing the blood to clot prior to isolating the liquid component.

Plasma is mainly composed of water, blood proteins, and inorganic electrolytes. It serves as transport medium for glucose, lipids, amino acids, hormones, metabolic end products, carbon dioxide and oxygen.

Learn more about blood donations, blood plasma donations, and related health topics.