You are in Medical Library . This test helps in determining if a patient has liver disease or kidney disease , or if not enough protein is being absorbed by the body.
Albumin is the protein of the highest concentration in plasma.
This is because, unlike small molecules such as sodium and chloride, the concentration of albumin in the blood is much greater than it is in the extracellular fluid. Because albumin is synthesized by the liver, decreased serum albumin may result from liver disease. It can also result from kidney disease, which allows albumin to escape into the urine. Decreased albumin may also be explained by malnutrition or a low protein diet. A needle is inserted into the vein, and the blood is collected in an air-tight vial or a syringe.