British world cycling champion Mark Cavendish on Friday admitted missing an out-of-competition drugs test after failing to update his whereabouts schedule, which dictates where and when testing takes place. \"I missed an out-of-competition test last April, it was my mistake,\" the 26-year-old said in a statement. \"I was with a film crew from the BBC and Giro d\'Italia on Mount Etna. It was a simple, genuine admin error. \"Of course I totally understand the importance of testing in sport. I was tested by the UCI (International Cycling Union) a couple of weeks before that and twice in the fortnight after and had around 60 tests in all last year. \"It\'s part of the job. And it\'s my job to make sure that I don\'t miss another.\"