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About: Gmelin's test     Goto   Sponge   NotDistinct   Permalink

An Entity of Type : yago:Trial105799212, within Data Space : dbpedia.org associated with source document(s)

Type: cricketeryago:WikicatChemicalTestsyago:Abstraction100002137yago:Cognition100023271yago:Experiment105798043yago:HigherCognitiveProcess105770664yago:Inquiry105797597yago:ProblemSolving105796750yago:Process105701363yago:PsychologicalFeature100023100yago:Thinking105770926yago:Trial105799212 New Facet based on Instances of this Class

Gmelin's test is a chemical test used for detecting the presence of bile pigments in urine. It is named after Leopold Gmelin, who introduced the test. Five millilitres of urine is slowly added to five millilitres of concentrated nitric acid in a test-tube. Different coloured rings between the two layers are visible if bile pigments are present as they are oxidised to various chemical products. Nitric acid is used as the oxidising agent. Blue, green and violet rings are seen if bilirubin is present. Gmelin's test is not sensitive so a positive result always indicates the presence of bile pigments but a negative result does not exclude the presence of small quantities of bile pigments.