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Bilirubin
Also known as: Total bilirubin, neonatal bilirubin, direct bilirubin (also known as conjugated bilirubin), indirect bilirubin (also known as unconjugated bilirubin) Related tests: AST, ALT, ALP, GGT, liver function tests
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The Test Sample
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What is being tested?Bilirubin is an orange-yellow pigment found in bile. It is formed when haemoglobin, the red-coloured pigment of red blood cells that carries oxygen to tissues, breaks down. Small amounts of bilirubin are present in blood from damaged or old red cells that have died.
How is the sample collected for testing?
From blood samples. In newborns, blood is often collected from a heel-prick. For adults, blood is typically collected by needle from a vein.
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This page was last modified on
April 22, 2004.
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