One of the most important serum proteins produced in the liver is albumin. This molecule has an extraordinarily wide range of functions, including nutrition, maintenance of oncotic pressure and transport of Ca++, bilirubin, free fatty acid, drugs and steroids. Variation in albumin levels indicate liver diseases, malnutrition, skin lesions such as dermatitis and burns or dehydration. Clinical diagnosis should not be made on a single test result; it should integrate clinical and other laboratory data.