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.113.2 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 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.