Bilirubin in urine is a breakdown product of hemoglobin, resulting from the liver conjugating bilirubin to make it water-soluble.
Bilirubin is a pigment that results from the breakdown of the heme portion of hemoglobin. The liver conjugates bilirubin, making it water-soluble, and the conjugated form is excreted in urine as urobilinogen, giving urine its color.
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