5.1.2.3 The Results Management  Authority shall also indicate the scheduled date, time and place for the “B” Sample  analysis for the eventuality that the Athlete  or Results Management  Authority chooses to request an analysis of the “B” Sample ; it shall do so either in the notification letter described in  Article 5.1.2.1 or in a subsequent letter promptly after the Athlete  (or the Results Management  Authority) has requested the “B” Sample analysis.