Liquid removed from clotted blood is called?

Liquid removed from clotted blood is called?

• A. Plasma
• B. Serum
• C. Buffy coat
• D. Cells

Answer: (B)

Liquid removed from clotted blood is serum. When blood is allowed to clot and then separated by centrifugation, the liquid that remains is serum, which lacks fibrinogen and other clotting factors because they are used up to form the clot. This distinguishes it from plasma, which is obtained from blood collected with anticoagulants and still contains clotting factors. The thin layer between the red cells and the plasma is the buffy coat, rich in white blood cells and platelets, while the remaining solid portion consists of the cells themselves.

Liquid removed from clotted blood is serum. When blood is allowed to clot and then separated by centrifugation, the liquid that remains is serum, which lacks fibrinogen and other clotting factors because they are used up to form the clot. This distinguishes it from plasma, which is obtained from blood collected with anticoagulants and still contains clotting factors. The thin layer between the red cells and the plasma is the buffy coat, rich in white blood cells and platelets, while the remaining solid portion consists of the cells themselves.