Indirect bilirubin 100 represents a very high indirect bilirubin result. Indirect bilirubin is bilirubin that is not bound to glucuronic acid, also called unconjugated bilirubin. When red blood cells are destroyed, hemoglobin can be converted to indirect bilirubin and in the liver to direct bilirubin. When increased red blood cell destruction exceeds the liver’s ability to metabolize it, indirect bilirubin enters the bloodstream directly, resulting in elevated indirect bilirubin. The normal range for indirect bilirubin is 1.7 to 10.2 μmol/L. So an indirect bilirubin of 100 μmol/L is very high. It may be related to liver disease, hemolytic anemia, hepatocellular jaundice, blood group incompatibility and blood transfusion. There may be symptoms such as jaundice, dyspepsia, nausea, vomiting and pain in the right upper abdomen. It is recommended that patients with indirect bilirubin 100μmol/L should consult a doctor in time, improve relevant examinations, clarify the cause of the disease and treat it actively.