The normal jaundice index for adults is less than 17.1umol, and if it is outside the normal range, it is an abnormality. The normal range of adult jaundice index is less than 17.1umol, if the test result shows that the index is out of the normal range, it is an abnormal phenomenon. Generally, elevated jaundice index in adults may be triggered by bile duct obstruction due to blood transfusion errors, gallstones, cholecystitis, hemolytic disease and other conditions. Jaundice can also be elevated when the patient has hepatitis, cirrhosis, liver cancer and other diseases. Meanwhile, jaundice is mainly caused by excessive destruction of red blood cells in the body or abnormal discharge caused by diseases of the liver and gallbladder system, so that bilirubin accumulates in the body, which induces yellowish coloration of the skin and the whites of the eyes. Neonatal jaundice, on the other hand, may be physiological jaundice or pathologic jaundice, and, if necessary, should be promptly consulted for targeted treatment. Adult patients are advised to evaluate the jaundice index under the guidance of their doctors, and if abnormalities occur, the cause of the disease should be identified and treated in a timely manner.