a) Whole blood “A” and “B”  Samples without an  Adverse Analytical Finding or Atypical Finding : The Laboratory  shall retain the whole blood Samples  without an Adverse Analytical Finding  or Atypical Finding  for a minimum of one (1) month after reporting the final analytical result in ADAMS  19. b) Whole blood Sample s with irregularities : The Laboratory  shall retain the whole blood Sample s with irregularities for a minimum of one (1) month after reporting the final analytical result in ADAMS , or for a longer period as determined by the Testing  Authority , Results Management  Authority  or WADA 19. c) Whole  blood  “A” and “B” Sample(s)  with an  Adverse Analytical Finding  or Atypical Finding : The Laboratory  shall retain “A” and “B” whole blood Sample(s)  with an  Adverse Analytical Finding  or Atypical Finding for a minimum of three (3) months after reporting the final analytical result (for the “A” or the “B” Sample , as applicable) in ADAMS  21, 22  or for a longer period as informed to the Laboratory , in writing, by the relevant Testing  Authority , Results Management  Authority  or WADA 19. d) Whole blood  “A” and “B” Sample(s)  under challenge, dispute or investigation : If the Laboratory  has been informed by the Testing    22 If the “B” Sample  Confirmation Procedure  is not performed, the Laboratory  may dispose of both the “A” and “B” whole blood Samples three  (3) months after reporting the “A ” Sample  analytical result.