title: Comparison of four methods for determination of delta-aminolevulinic acid in urine, and evaluation of critical factors.
mesh_terms: D000085:Acetates; D001322:Autoanalysis; D001386:Azides; D002852:Chromatography, Ion Exchange; D004355:Drug Stability; D005069:Evaluation Studies as Topic; D006801:Humans; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D007855:Lead Poisoning; D007982:Levulinic Acids / Q000652:urine*; D008722:Methods; D009994:Osmolar Concentration; D013053:Spectrophotometry; D013644:Tartrates; D013943:Thymol
chemical_list: D000085:Acetates; D001386:Azides; D007982:Levulinic Acids; D013644:Tartrates; D013943:Thymol