Which component is the straw-colored liquid that remains after clotting (serum)?

Which component is the straw-colored liquid that remains after clotting (serum)?

• A. Plasma
• B. Platelets
• C. Serum
• D. White Blood Cells

Answer: (C)

When blood clots, the liquid left behind is serum. This straw-colored liquid is the liquid portion of blood after the clot has formed, and it no longer contains fibrinogen or other clotting factors because they’ve been used up in making the clot. That’s what differentiates it from plasma, which is the liquid component of blood that has been prevented from clotting and still contains fibrinogen and other clotting factors. Platelets and white blood cells are cellular components involved in clotting and immune responses, not the liquid portion itself. Serum is commonly used in many serology and chemistry tests because it reflects the blood’s soluble components without the clotting factors.

When blood clots, the liquid left behind is serum. This straw-colored liquid is the liquid portion of blood after the clot has formed, and it no longer contains fibrinogen or other clotting factors because they’ve been used up in making the clot. That’s what differentiates it from plasma, which is the liquid component of blood that has been prevented from clotting and still contains fibrinogen and other clotting factors. Platelets and white blood cells are cellular components involved in clotting and immune responses, not the liquid portion itself. Serum is commonly used in many serology and chemistry tests because it reflects the blood’s soluble components without the clotting factors.