Theo Bos will not start the 2013 Vuelta a España after a pre-race test disclosed low levels of cortisol, his Belkin team announced Saturday.
“The team has decided to send Bos home to recover because of low cortisol levels that appeared in a regular pre-race UCI test, which is an indication of suboptimal health conditions,” the team announced on its website.
The UCI tested riders on Thursday and emailed the team regarding Bos’ results on Saturday.
The UCI allows riders with low cortisol levels to start WorldTour races. But Belkin is a member of the Movement for Credible Cycling (MPCC), whose rules state that riders with low cortisol levels should not race until those levels return to within a normal range.