Where these Anti -Doping Rules place the burden of proof upon the Athlete  or other Person  alleged to have committed an anti -doping rule violation to rebut a presumption or establish specified facts or circumstances, except as provided in Articles 3.2.2 and 3.2.3 , the standard of proof shall be by a balance of probability.11  3.2  Methods of Es tablishing Facts and Presumptions   Facts related to anti -doping rule violations may be established by any reliable means, including admissions.12 The following rules of proof shall be applicable in doping cases:   3.2.1   Analytical methods or Decision Limits  approved by WADA  after consultation within the relevant scientific community or which have been the subject of peer review are presumed to be scientifically valid.