What albumin level is indicative of malnutrition?

An albumin level of 3.5 g/dL is typically recognized as reflecting a potential state of malnutrition. In clinical practice, albumin serves as a key indicator of nutritional status, particularly protein synthesis in the liver. Normal serum albumin levels generally range from approximately 3.5 to 5.0 g/dL. When levels fall below this range, especially reaching 3.5 g/dL, it may suggest that the individual is experiencing protein deficiency or malnutrition, particularly in the context of chronic illness or inadequate dietary intake.

Lower albumin levels, such as 2.5 g/dL or 3.0 g/dL, often indicate more severe malnutrition or acute illness affecting protein metabolism and synthesis. Such levels imply a clear disruption in the body's ability to maintain adequate protein stores, which can lead to various health complications. While a level of 4.0 g/dL falls within the normal range and would not typically indicate malnutrition, it is essential to evaluate albumin levels in conjunction with a comprehensive clinical assessment, including dietary intake and physical examination findings, to fully understand a patient's nutritional status.