Serum Bilirubin

A serum bilirubin blood test is also called a bilirubin blood test. Bilirubin is yellow in color and found in bile, a liquid produced by the liver. Bilirubin is left over after older red blood cells are replaced by newer red blood cells every day. The liver helps to break down bilirubin so it can be removed from the body as stool. Too much bilirubin can cause jaundice, a yellow color in the skin, eyes or mucus membrane. A bilirubin blood test is used to check for jaundice. The bilirubin levels for infants and newborns is commonly checked. The test can also be done on older infants, children and adults suspected to have jaundice. The serum bilirubin blood test can detect liver or gallbladder irregularities.

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