What Is The Difference Between Bilirubin And Urobilinogen?

What Is The Difference Between Bilirubin And Urobilinogen? Urobilinogen is formed from the reduction of bilirubin. Bilirubin is a yellowish substance found in your liver that helps break down red blood cells. Normal urine contains some urobilinogen. If there is little or no urobilinogen in urine, it can mean your liver isn’t working correctly. What