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 IRF 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 invalidate 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                                                 12  [Comment to Article 3.2: For example, IRF may establish an anti-doping rule violation under Article 2.2 based on the Athlete’s admissions, the credible testimony of third Persons, reliable documentary evidence, reliable analytical data from either an A or B Sample as provided in the Comments to Article 2.2, or conclusions drawn from the profile of a series of the Athlete’s blood or urine Samples, such as data from the Athlete Biological Passport.]