title: Control of lead workers by determination of urinary delta-aminolaevulinic acid.
mesh_terms: D003404:Creatinine / Q000652:urine; D006801:Humans; D007855:Lead Poisoning / Q000517:prevention & control*; D007982:Levulinic Acids / Q000652:urine*; D009787:Occupational Medicine
chemical_list: D007982:Levulinic Acids; D003404:Creatinine