If the Athlete  or other Person  rebuts the preceding presumption by showing that a departure from the International Standard  for Laboratories occurred which could reasonably have caused the Adverse Analytical Finding , then the WKF  shall have the burden to establish that such departure did not cause the Adverse Analytical Finding .14  3.2.3   Departures from any other International Standard  or other anti -doping rule or policy set forth in the Code  or these Anti -Doping  Rules shall not i nvalidate analytical results or other evidence of an anti -doping rule violation, and shall not constitute a defense to an anti -doping rule violation;15 provided, however, if the Athlete  or other Person  establishes that a departure from one  of the specific International Standard  provisions listed below could reasonably have caused an  13  [Comment to Article 3.2.1: For certain Prohibited Substances, WADA may instruct WADA -accredited laboratories not to report Samples as an Adverse Analytical Finding if the estimated concentration of the Prohibited Substance or its Metabolites or Mar kers is below a Minimum Reporting Level.