18.4  All National Federations and the PSA shall take appropriate action to enforce compliance with the Code, International Sta ndards , and these Anti -Doping Rules by inter alia : (i) conducting Testing  only under the documented authority of the WSF and using their National Anti -Doping Organisation or other Sample collection authority to collect Samples  in compliance with the International Standard  for Testing and Investigations ;  (ii) recognizing the authority of the National Anti -Doping Orga nisation in their country in accordance with Article 5.2.1 of the Code and assisting as appropriate with the National Anti -Doping Organisation’s implementation of the national Testing program for their sport;  (iii) analysing all Samples  collected using a WADA-accredited or WADA -approved laboratory in accordance with Article 6.1; and  (iv) ensuring that any national le vel anti -doping rule violation cases discovered by National Federations  are adjudicated by an Operationally Independent  Hearing Panel in accord ance with Article 8.1 and the International Standard for Results Management .