As noted in the Comment to Article 3.2, unlike the proof required to establish an anti -doping rule violation under Article  2.1, Use or Attempted Use may also be established by other reliable means such as admissions by the Rider , witness statements, documentary evidence, conclusions drawn f rom longitudinal profiling, including data collected as part of the Athlete Biological Passport, or other analytical information which does not otherwise satisfy all the requirements to establish “Presence” of a Prohibited Substance under Article  2.1.