Definition for Bilirubin
From Biology Forums Dictionary
Bilirubin is a yellowish substance in your blood. It forms after red blood cells break down, and it travels through your liver, gallbladder, and digestive tract before being excreted. Typically, bilirubin levels fall somewhere between 0.3 and 1.2 milligrams per deciliter (mg/dL). This tends to increase in people with Hepatitis or an obstruction in the gallbladder.