6.6  Further analysis of a Sample after it has been reported as negative or has otherwise not result-ed in an anti-doping rule violation chargeAfter 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 subjected to further analyses for the purpose of Article 6.2 at any time exclusively at the direction of the BIU (if it initiated and directed Sample collection), the Anti-Doping Organisation that initiated and directed Sample collection (if not the BIU) or WADA.