Which is the liquid portion obtained from clotted blood?

Which is the liquid portion obtained from clotted blood?

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

Answer: (B)

Liquid portion obtained from clotted blood is serum. When blood is allowed to clot, fibrin forms a mesh that traps cells and clotting factors, converting fibrinogen into fibrin and incorporating it into the clot. The liquid that remains after removing the clot is serum, which lacks fibrinogen and other clotting factors but contains dissolved substances like electrolytes and antibodies. Plasma would come from blood treated with an anticoagulant to prevent clotting and still contains fibrinogen and other clotting factors. The buffy coat is the thin layer rich in white blood cells and platelets, and red blood cells form the bottom layer. So the liquid from clotted blood is serum.

Liquid portion obtained from clotted blood is serum. When blood is allowed to clot, fibrin forms a mesh that traps cells and clotting factors, converting fibrinogen into fibrin and incorporating it into the clot. The liquid that remains after removing the clot is serum, which lacks fibrinogen and other clotting factors but contains dissolved substances like electrolytes and antibodies. Plasma would come from blood treated with an anticoagulant to prevent clotting and still contains fibrinogen and other clotting factors. The buffy coat is the thin layer rich in white blood cells and platelets, and red blood cells form the bottom layer. So the liquid from clotted blood is serum.