5.5.6  An Athlete  in World Triathlon Registered  Testing Pool  shall continue to be subject to the obligation to comply with the whereabouts requirements set in the International Standard for Testing  and Investigations unle ss and until World Triathlon Anti -Doping Rules 2021  20  (a) the Athlete  gives written notice to World Triathlon that he or she has retired or (b) World Triathlon has informed him or her that he or she no longer satisfies the criteria for inclusion in World Triathlon ’s Registered Testing Pool .