Winding up the hearings, the Commission hears testimony from Dr Wouter Basson in July 1998, who headed a government chemical and biological weapons programme during the apartheid era.
Bjorn Basson and Chiliboy Ralepelle both tested positive for the banned stimulant methylhexaneamine and as a result, UK Sport tested six South Africa players following their defeat by Scotland instead of the usual two.
Basson was due to fly back on Monday in any event as he injured his ankle in the win at the Millennium Stadium and had been ruled out of the rest of the tour.
Two other Stormers - wing Gio Aplon and blind-side flanker Francois Louw - will also win their first caps, as will replacements Alistair Hargreaves and Bjorn Basson if they come off the bench in the Millennium Stadium.