Bilirubin is a yellow pigment produced when red blood cells break down. Normally, bilirubin is processed in the liver, converted into bile, and excreted through the intestines. In healthy individuals, bilirubin is typically not present in urine because the liver effectively clears it from the bloodstream.
When bilirubin is detected in urine, it may indicate liver or bile duct issues, as well as conditions that cause red blood cell breakdown. Testing bilirubin in urine provides valuable insights into liver function and overall bile processing.