title: Radiometric method for pyrazinamide susceptibility testing of Mycobacterium tuberculosis in egg-yolk-enriched BACTEC 12A medium.
abstract: A radiometric method for testing the susceptibility of Mycobacterium tuberculosis to pyrazinamide in egg-yolk-enriched 12A medium (pH 5.5) is described. We obtained 100% agreement between the 7H10 agar method with 25 microgram of pyrazinamide per ml and the modified radiometric method with a drug concentration of 50 microgram/ml in tests of 90 clinical isolates.
mesh_terms: D000818:Animals; D003470:Culture Media; D004530:Egg Yolk; D006863:Hydrogen-Ion Concentration; D008826:Microbial Sensitivity Tests; D009169:Mycobacterium tuberculosis / Q000187:drug effects* / Q000254:growth & development; D011718:Pyrazinamide / Q000494:pharmacology*; D011874:Radiometry
chemical_list: D003470:Culture Media; D011718:Pyrazinamide