ISL – January 2021 Page 97 of 160 - Target Analyte (s) If more than one (1) Prohibited Substance , Metabolite (s) of a Prohibited Substance , or Marker (s) of the Use of a Prohibited Substance  or Prohibited  Method has been confirmed in the “A” Confirmation Procedure , the Laboratory  shall confirm as many of the Adverse Analytical Findings  as possible given the “B” Sample  volume available.