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 FIS 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 S tandard  or other anti -doping rule or policy set forth in the Code  or these Anti -Doping  Rules shall not invalidate analytical results  or other evidence of an anti -doping rule violation, and shall not constitute a defence to an anti -doping rule violation;15 provided, however, i f the Athlete  or other Person  establishes  that a departure from one of the specific International Standard  provisions listed below c ould reasonably have caused an anti -doping rule violation based on an Adverse Analytical Finding  or whereabouts failure , then FIS shall have the burden to establish that such departure did not cause the Adverse Analytical Finding or the whereabouts failure :   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 Markers is below a Minimum Reporting Level.