urobilinogen

• 在肠道中由胆红素分解形成的色素原，是胆红素代谢的中间产物；氧化后生成尿胆素，部分随粪便排出，部分被重吸收后经胆汁或尿液排出。

A chromogen produced in the intestine from the breakdown of bilirubin; upon oxidation it yields urobilins. Some is excreted in the feces, while some is reabsorbed and excreted in bile or urine.

不可数

1. Bile pigment derivativeC2formalmedical

   A colorless compound produced in the intestine from the bacterial reduction of bilirubin, which is then partially reabsorbed and excreted in urine or bile, and upon oxidation forms urobilin.

   胆色素衍生物

   • The presence of urobilinogen in urine is a normal finding, but elevated levels may indicate liver dysfunction.
   • Doctors measure urobilinogen levels to assess hemolysis or hepatic function.
   • Urobilinogen is converted to urobilin, which gives urine its characteristic yellow color.