Perez denies using any performance-enhancing drugs
Colombia “surprised” at positive doping control from Costa Rica
Marlon Perez said that he was “surprised” at his positive doping controls from the Vuelta a Costa Rica, denying that he had ever used performance-enhancing drugs. The UCI announced last week that he had tested positive at the race last December.
He returned analytical findings of metabolite GW1516 sulfone – Metabolic Modulator and sibutramine in urine samples collected from him during tests at the Vuelta a Costa Rica on 19 and 26 December, 2012, after winning the stages on those days.
Get The Leadout Newsletter
The latest race content, interviews, features, reviews and expert buying guides, direct to your inbox!
Thank you for reading 5 articles in the past 30 days*
Join now for unlimited access
Enjoy your first month for just £1 / $1 / €1
*Read any 5 articles for free in each 30-day period, this automatically resets
After your trial you will be billed £4.99 $7.99 €5.99 per month, cancel anytime. Or sign up for one year for just £49 $79 €59
Join now for unlimited access
Try your first month for just £1 / $1 / €1