The normal value of human albumin is 35-51 g/L, but the reference value may change somewhat with the use of different instruments and equipment in different units. Albumin is produced in the human liver and is formerly called pre-albumin, which is converted to albumin in three days or a week. It is rare for human albumin to increase, but if there is dehydration in the body, which is due to blood concentration, it can be reflected in elevated albumin. Most diseases can lead to a decrease in albumin, especially in patients with malignant tumors or in patients with severe malnutrition, where albumin synthesis is impaired, which can lead to a decrease in albumin. In addition, the body may become edematous after a decrease in albumin.