The normal value of indirect bilirubin is 1.7-10.2 umol/L. Indirect bilirubin of 29 umol/L is abnormal and may be caused by liver diseases such as cirrhosis, viral hepatitis, or hematologic diseases such as hemolytic anemia and aplastic anemia, but the severity needs to be determined depending on the situation. The sum of direct and indirect bilirubin is called total bilirubin, and indirect bilirubin may rise when the destruction of red blood cells in the body exceeds the metabolic capacity of the liver. If there is also total bilirubin higher than 34.2 umol/L, it may be caused by liver cell necrosis, such as cirrhosis, viral hepatitis and other liver diseases. If it is accompanied by a decrease in hemoglobin and red blood cell count, it may be caused by increased indirect bilirubin production due to massive destruction of red blood cells, such as hemolytic anemia, aplastic anemia, and other hematologic disorders. The severity of the patient’s condition cannot be evaluated on the basis of a single indirect bilirubin value alone. If a patient’s test reveals abnormalities in indirect bilirubin, it is recommended that he or she consult a doctor for standardized treatment under his or her supervision.