INDIRECT BILIRUBIN - Free bilirubin that has not been attached to a glucuronide molecule. This results from the rapid breakdown of red blood cells. The hemoglobin molecule is normally converted to bilirubin. Greater than normal values of indirect bilirubin can be seen in erythroblastosis fetalis, hemolytic anemia, sickle cell anemia, transfusion reactions, pernicious anemia, and resolution of large hematomas.