(fū-sha'), a 25% solution of trichloroacetic acid, containing 0.9% ferric chloride; a drop of the reagent added at the surface line of barium chloride-impregnated filter paper that has been dipped in urine for 10 seconds will give a green color if bilirubin is present.

Fouchet's reagent is used to detect bilirubin (bile) in urine. To about 10 ml urine, add 1 gm barium chloride, mix and filter. Spread out on a filter paper. When it is partly dry, drop a little Fouchet's reagent or yellow nitric acid on the precipitate.

ouchet's reagent is used to detect bilirubin (bile) in urine. Composition**. Ingredients. Trichloroacetic acid. 25.00 gm. Ferric chloride,10% aqueous.

A colour test for the presence of bilirubin in the urine. A green colour is produced when the sample is treated with iron (iii) chloride solution.

FOUCHETS REAGENT