A red pigment occurring in liver bile, blood, and urine. Its measurement can be used as an indication of the health of the liver. Bilirubin is the product of the breakdown of hemoglobin in red blood cells. It is removed from the blood and processed by the liver, which secretes it into the digestive tract. The normal value is 0.1 to 1.5 milligrams per liter of blood. An elevated level of bilirubin in blood serum is an indication of liver disease or drug-induced liver impairment.
a yellowish pigment released by red blood cells when
they are removed from circulation and broken down. Normally bilirubin
is processed and excreted by the liver; an excess level of serum bilirubin
(hyperbilirubinemia) is characterized by jaundice (yellowing of the skin
and eyes), and may indicate stress on the liver; bilirubin levels are
measured to gauge the health of the liver.
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