title: Classification of subjects as slow or rapid inactivators of isoniazid, based on the ratio of the urinary excretion of acetylisoniazid to isoniazid.
mesh_terms: D000215:Acylation; D006801:Humans; D007273:Injections, Intramuscular; D007538:Isoniazid / Q000097:blood / Q000378:metabolism* / Q000627:therapeutic use / Q000652:urine*; D008722:Methods; D013048:Specimen Handling; D013053:Spectrophotometry; D013997:Time Factors; D014397:Tuberculosis, Pulmonary / Q000188:drug therapy / Q000378:metabolism
chemical_list: D007538:Isoniazid