TWIF  2021 Anti -Doping Rules  v1 Page 19 of 67    5.5.5  For purposes of Article 2.4, (applicable only to whereabouts failures for Athletes  in TWIFs Registered Testing Poo l) an Athlete’s failure to comply with the requirements of the International Standard for Testing  and Investigations shall be deemed a filing failure or a missed test, as defined in Annex B of the International Standard for Results Management , where the conditions set forth in Annex B are met.