This was another one of those crazy cases where a rider managed to talk himself out of a positive doping test:
https://cyclingtips.com/2014/08/daryl-impey-cleared-of-doping-durban-pharmacist-takes-responsibility/
https://cyclingtips.com/2014/08/daryl-impey-cleared-of-doping-durban-pharmacist-takes-responsibility/