The Plasm a Protein That Contributes the Most to the Oncotic

Question

The plasm a protein that contributes the most to the oncotic pressure is
A) Albumin
B) Fibrinogen
C) $\alpha$2macroglobulin
D) IgA
E) IgG

Accepted Answer

Albumin is the most abundant plasma protein and plays a key role in maintaining the oncotic pressure (colloid osmotic pressure) of the blood, which helps in keeping the fluid from leaking out into the tissues from the blood vessels.