The detection of keto acids in biological fluids by two dimensional paper chromatography of their 2,4-dinitrophenylhydrazones.
D002854:Chromatography, Paper; D006834:Hydrazines; D007651:Keto Acids / Q000032:analysis* / Q000097:blood / Q000652:urine; D012463:Saliva / Q000032:analysis; D013542:Sweat / Q000032:analysis
D006834:Hydrazines; D007651:Keto Acids