For 10 points, name this yellow liquid that makes up slightly over half of the volume of blood.
Antithrombin III deficiency can be treated using the "fresh frozen" variety of this substance, which prominently features albumin. The hematocrit is found by taking one hundred percent and subtracting the volume fraction of this liquid, which is known as serum if it does not contain clotting factors. It is separated using a centrifuge. For 10 points, name this yellow liquid that makes up slightly over half of the volume of blood.
Antithrombin III deficiency can be treated using the "fresh frozen" variety of this substance, which prominently features albumin.
{plasma}