title: Letter: Possible mechanism of the interference of porphobilinogen in the direct determination of urinary delta-aminolevulinic acid.
mesh_terms: D000622:Aminolevulinic Acid / Q000652:urine*; D055598:Chemical Phenomena; D002621:Chemistry; D005069:Evaluation Studies as Topic; D006358:Hot Temperature; D007982:Levulinic Acids / Q000652:urine*; D011162:Porphobilinogen
chemical_list: D007982:Levulinic Acids; D011162:Porphobilinogen; D000622:Aminolevulinic Acid