title: A VERTICAL DIFFUSION METHOD FOR THE MICROBIOLOGICAL ASSAY OF ISONIAZID.
abstract: A method is described for the assay of isoniazid in serum and other fluids by diffusion along slopes of Löwenstein-Jensen medium inoculated with tubercle bacilli. The method is convenient, rapid and robust, but is less accurate than diffusion systems for the assay of some other substances.
mesh_terms: D001681:Biological Assay; D001769:Blood; D001826:Body Fluids; D003470:Culture Media; D006801:Humans; D007538:Isoniazid; D009169:Mycobacterium tuberculosis
chemical_list: D003470:Culture Media; D007538:Isoniazid
keywords: BIOLOGICAL ASSAY; BLOOD; BODY FLUIDS; ISONIAZID; MYCOBACTERIUM TUBERCULOSIS