is bilirubin a component of feces
Bilirubin is an orange-yellow pigment, a waste product primarily produced by the normal breakdown of heme. Heme is a component of hemoglobin, which is found in red blood cells (RBCs). Bilirubin is ultimately processed by the liver to allow its elimination from the body.Any condition that accelerates the breakdown of RBCs or affects the processing and elimination of bilirubin may cause an elevated blood level. Unconjugated bilirubin âwhen heme is released from hemoglobin, it is converted to unconjugated bilirubin. 2  It is carried by proteins to the liver. 3  Small amounts may be present in the blood. 4  Conjugated bilirubin âformed in the liver when sugars are attached (conjugated) to bilirubin.