| However, the absence of urobilinogen in the specimen cannot be determined. |
| Being a breakdown product of hemoglobin, urine is colored by urobilinogen and is more hypertonic than plasma and more acid. |
| Decreased urobilinogen was also observed and is considered to be related to changes in the intestinal flora resulting in reduced production of urobilinogen from bilirubin. |
| A portion of bilirubin is converted to urobilinogen in the intestine and eventually gets excreted into the urine and feces. |
| Convert bilirubin to urobilinogen, some of which is reabsorbed and subjected to enterohepatic recirculation, while the rest is excreted through the kidneys as urobilin. |
| Convert urobilinogen to stercobilinogen, which is excreted in the faeces as stercobilin and imparts the brown colour to faecal matter. |
