]39 World Anti-Doping Code •2009ARTICLE 6: ANAL YSIS OF SAMPLE SSample s shall be analyzed in accordance with thefollowing principles:6.1 Use of Approved LaboratoriesFor purposes of Article 2.1 (Presence of a ProhibitedSubstance or its Metabolite s or Marker s),Sample s shallbe analyzed only in WADA -accredited laboratories or asotherwise approved by WADA .