👉 The gained fluid, also known as plasma or blood plasma, refers to the liquid component of blood that increases in volume when blood is drawn from a vein for laboratory testing. This increase occurs because the removal of blood cells (hemolysis) and plasma proteins during venipuncture causes a shift of fluid from the interstitial space into the vascular compartment, leading to an expansion of plasma volume. This phenomenon is crucial in clinical settings as it affects the accuracy of various blood tests and requires careful consideration when interpreting results.
