Bilirubin, the yellow pigment, when this pigment increases it results in serious health problems which also results in disease jaundice. The person suffering from this condition may experience severe abdominal pain, nausea and vomiting .even dark colored urine results in the infected person. This bilirubin even causes damage to the brain cells in the infants when the level increases also results in the condition likes mental retardation
The bilirubin is formed by the cavity biliverdin reductase; the increase in amount of this pigment in the body is just caused by the break down of red blood cells and severe failure of the liver and even it increases due to the condition of severe hepatitis. The bilirubin test is made to measure the amount of bilirubin level in the person.