title: Determination of acetylator phenotype based on the ratio of acetylisoniazid to isoniazid in urine following an oral dose of ordinary isoniazid.
mesh_terms: D000107:Acetylation; D000284:Administration, Oral; D006801:Humans; D007538:Isoniazid / Q000008:administration & dosage / Q000031:analogs & derivatives* / Q000652:urine*; D010641:Phenotype; D014397:Tuberculosis, Pulmonary / Q000652:urine*
chemical_list: D007538:Isoniazid