[Problem] To provide a plasma (or serum) separation apparatus and a plasma (or serum) separation method that enable quick, reliable, and low-cost separation of plasma from blood, even a minute amount of blood, at any place, without using a centrifuge separator, a pressurization/suction pump, or the like.[Solution] A plasma separation apparatus comprises a blood separation part having a blood separation member, and a plasma collection part having a plasma collection member, wherein the blood separation member is mounted on a hydrophobic pedestal and includes a blood receiving area and a plasma separation area that is connected to the plasma collection part, and the plasma separation part has the cross-sectional area thereof gradually decreasing toward the plasma collection part. Here, “plasma” means “plasma or serum.”
