18.4  All National Association s shall take appropriate action to enforce compliance with the Code, International Standards , and these Anti-Doping Rules by  inter alia:   (i) conducting Testing  only under the document ed authority of FIH and us ing their National Anti -Doping Organization 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 Organization in their country in accordance with Article 5.2.1 of the Code and assist ing as appropriate with the National Anti -Doping Organization’s implementation of the national Testing program for their sport;   (iii) analyzing all Samples  collected using a WADA -accredited  or WADA -approved laboratory in accordance with Article 6.1; and  (iv) ensuring that any national level anti-doping rule violation cases  discovered by National Association s are adjudicate d by an Operationally Independent  hearing panel in accordance with Article 8.1 and the International Standard for Results Management .