Urobilin is produced when Urobilinogen is oxidized by intestinal bacteria; it can also be produced when urobilinogen is exposed to the environment upon urination, resulting in its oxidation to urobilin.
Urobilin is produced. Urobilinogen is oxidized by intestinal bacteria. It can also be produced. Urobilinogen is exposed to the environment upon urination. Urobilinogen was resulting in its oxidation to urobilin.