Serum albumin is a protein that is produced in the liver and found in blood plasma. It is an important diagnostic marker and is often used as a measure of liver function. Synonyms for serum albumin include ALB, plasma albumin, and human serum albumin. Other related terms include serum protein, blood protein, and globulin. Serum albumin levels may be affected by a variety of factors, including inflammation, liver disease, and malnutrition. In some cases, low serum albumin levels can be an indicator of a more serious underlying condition, such as cancer, kidney disease, or heart failure. Accurate measurement and interpretation of serum albumin levels are critical for proper diagnosis and treatment.