1. Urobilinogen is converted to the yellow pigmented urobilin apparent in urine.2. I was surfing about the encyclopaedia and landed on the urobilinogen article. 3. This constitutes the normal " enterohepatic urobilinogen cycle ". 4. Any deterioration in liver function reduces its ability to process the recirculated urobilinogen . 5. Intestinal bacteria convert the bilirubin into urobilinogen . 6. From here urobilinogen can take two pathways. 7. Increased amounts of bilirubin are formed in hemolysis, which generates increased urobilinogen in the gut. 8. The degree of color change is proportional to the amount of urobilinogen in the urine sample. 9. Formed an unconjugated bilirubin entering the intestine, gives a large number of stercobilinogen ( urobilinogen ). 10. In biliary obstruction, below-normal amounts of conjugated bilirubin reach the intestine for conversion to urobilinogen .