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单词 Indirect bilirubin
释义

Indirect bilirubin

英语百科

Bilirubin

Heme metabolism

Reference ranges for blood tests, comparing blood content of bilirubin (shown in blue near center) with other constituents[22]

Bilirubin (formerly referred to as haematoidin) is the yellow breakdown product of normal heme catabolism, caused by the body's clearance of aged red blood cells which contain hemoglobin.

Bilirubin is excreted in bile and urine, and elevated levels may indicate certain diseases. It is responsible for the yellow color of bruises and the yellow discoloration in jaundice. It is also responsible for the brown color of feces, via its conversion to stercobilin, and the background straw-yellow color of urine via its breakdown product, urobilin.

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