Has Nibali been drug tested?
In reference to his poor form?
All riders are tested regularly but Nibali does ride for Astana so it's a good chance he's on drugs as Astana has a history with drug users. I don;t trust them at all.
Team Manager Vinokourov was banned for 2 years for blood doping in 2007;
Contador won 2010 Tour with Astana but was stripped of the title and given a 2 year ban for doping.
5 riders associated with Astana failed drug tests in 2014
Armstrong rode for Astana when he returned to racing after his first retirement.
If Nibali is not on drugs then he has made a really poor choice of companions,