Bile Pigments, The bile pigments are formed by the decomposition of the porphyrin ring and contain a chain of four pyrrole rings. Bilirubin, for example, the brownish-yellow pigment that gives feces its characteristic color, is the end product of the breakdown of heme from destroyed red blood cells.
Bile pigments absorbed on ppt of Basoy. Ferric chloride in Fouchet’s reagent oxidizes bilirubin into green biliverdin.
Take 5ml of urine + 1ml MgSoy +2ml 10%.
Backe Filter and the precipitate few drops of Fouchet’s reagents.
Color changes from yellow to Pista green.
Interpretation: Hay’s Sulphur test/Fouchel’s Test:
|Type of Jaundice||Hemolytic Jaundice Pre hapatic||Hepatocellular Jaundice (Hepatic)||obstructive Jaundice Poste (Hepatic)|