Gmelin's test for bile pigments: Gmelin's test is a specific test used for the qualitative detection of bile pigments in urine. The bile pigments i.e bilirubin and biliverdin are almost entirely excreted through the bile by the liver but in conditions like obstructive jaundice, where bile ducts get blocked, the bile pigments start appearing in the urine. Gmelin's test … [Read more...]