Where these Anti -Doping Rules p lace the burden of proof up on the Athlete  or other Person  alleged to have committed an anti -doping rule violation to rebut a presumption or establish specified facts or circumstances, exce pt as provided in Articles 3.2.2 and 3.2.3, the standard of proof sh all be by a balance of prob ability.11  3.2  Methods of Establishing 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 dop ing cases:   3.2.1   Analytic al 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.