title: [The New Dutch Kidney Test. III. Practical evaluation].
abstract: The New Netherlands Kidney Test (NNKT) is a method used to detect residues of antibacterial agents in slaughtered animals. This test will shortly be substituted for the current Netherlands Kidney Test (NKT). The new method was tested for its suitability in meat inspection in the field by four district laboratories, comparative studies with the current Netherlands Kidney test being done at the same time. These investigations showed that, when the new test (NNKT) was used, 5.3 per cent of the category of diseased animals and, using the current Netherlands Kidney Test, 2.2 per cent of these animals were positive. When control discs were used, it was shown that reproducibility of the new test (NNKT) within and between the participating laboratories was satisfactory. A method was developed to obtain similar results on re-examination with the NNKT as those obtained in the first inspection. By freezing the duplicate discs at the time of performance of the test and using these discs for re-inspection, reproducible results were obtained with the NNKT. The substance inhibiting the growth of bacteria was identified in a number of specimens diagnosed as positive when the NNKT was used. False-positive results were not recorded in the NNKT.
authors.forename: N J
authors.initials: NJ
authors.lastname: Broex
authors.forename: J M
authors.initials: JM
authors.lastname: den Hartog
authors.forename: J F
authors.initials: JF
authors.lastname: Nouws
mesh_terms: D000818:Animals; D000900:Anti-Bacterial Agents / Q000032:analysis*; D001431:Bacteriological Techniques / Q000592:standards / Q000662:veterinary*; D004350:Drug Residues / Q000032:analysis*; D005069:Evaluation Studies as Topic; D005513:Food Inspection; D007668:Kidney / Q000032:analysis*; D008460:Meat; D009426:Netherlands
chemical_list: D000900:Anti-Bacterial Agents
vernacular_title: De Nieuwe Nederlandse Niertest. III. Praktijkevaluatie.