6.6 Further Analysis of a Sample  After it has been Reported as Negative or has Otherwise not Resulted in an Anti -Doping Rule Violation Charge   After a laboratory has reported a Sample  as negative, or the Sample  has not otherwise resulted in an anti -doping rule violation charge, it may be stored and may be subject to further analyses at any time for the purpose of Article 6.2 of these Rules by the IOC, the ITA or WADA .