Serum Albumin test measures the level of albumin in the blood. Albumin is the most abundant protein in the blood, produced by the liver. It plays a crucial role in maintaining pressure within blood vessels to prevent leaking fluids and in transporting hormones, vitamins, and other substances throughout the body. The test is primarily used to assess liver function and nutritional status. Low levels of albumin can indicate liver disease or an inflammatory response, and might also suggest malnutrition or a problem with nutrient absorption. On the other hand, high levels are rare but can occur in conditions such as severe dehydration. Routinely checking albumin levels can help in the diagnosis and monitoring of liver conditions, kidney disease, and nutritional health.