One of the favourites for the 2015 Tour de France, Chris Froome, has revealed he has missed two drug tests since 2010.
Froome's admission follows recent intense media coverage on doping, after Mo Farah confirmed he missed two drugs tests in the run-up to London 2012.
The 2013 Tour de France winner said he missed a test earlier this year while he was on holiday in Italy.
"We came down for breakfast and hotel staff said 'anti-doping guys were here, but it's our policy not to let anyone disturb our clients'," said the 30-year old.
The Team Sky rider also said he missed a test in 2010 when he went on a training ride.
Following his Tour de France victory in 2013, Froome was widely accused of doping and was tested "30 times in three weeks".
"The authorities showed up at seven o'clock in the morning and the hotel wouldn't give them access to our room. They also refused to let them call up to the room," said Froome.
"I should've been more proactive in letting the hotel know that this is a possibility that I could be tested. I've certainly learnt my lesson there.
"It's always the athlete's responsibility to make sure he or she is available for testing."