Albumin is a type of protein found in the blood that plays a crucial role in maintaining the body's fluid balance and transporting various substances throughout the body. It is produced by the liver and constitutes a significant portion of the total protein in the blood. Albumin levels are often used as a marker of overall health and can be influenced by various factors such as nutrition, kidney function, and liver function. Abnormal albumin levels can be indicative of underlying health conditions such as liver disease, kidney disease, or malnutrition. Researchers study albumin to better understand its functions, roles in disease processes, and potential therapeutic applications.