The bilirubin test is used to: Check alarmist action and watch for signs of alarmist disease, such as hepatitis or cirrhosis, or the furnishings of medicines that can accident the liver. Find out if something is blocking the acerbity ducts. This may action if gallstones, tumors of the pancreas, or added altitude are present. Diagnose altitude that could cause added abolition of red claret cells, such as hemolytic anemia orhemolytic ache of the newborn. Help accomplish decisions about whether bairn babies with neonatal jaundice charge treatment. These babies may charge analysis with appropriate lights, alleged phototherapy. In attenuate cases, claret transfusions may be needed.