A urobilinogen in urine test measures the amount of urobilinogen in a urine sample. 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. Too much urobilinogen in urine can indicate a liver disease such as hepatitis or cirrhosis.
Other names: urine test; urine analysis; UA, chemical urinalysis