title: Simultaneous multicolumn operation of the UV-analyzer for body fluids.
mesh_terms: D001322:Autoanalysis; D001826:Body Fluids / Q000032:analysis*; D002624:Chemistry, Clinical / Q000295:instrumentation*; D002852:Chromatography, Ion Exchange; D003110:Colonic Neoplasms / Q000652:urine; D006801:Humans; D008722:Methods; D009536:Niacinamide / Q000378:metabolism; D013053:Spectrophotometry; D014466:Ultraviolet Rays; D014556:Urine / Q000032:analysis
chemical_list: D009536:Niacinamide