This is no big deal for an athlete who is about to retire. Those doping guys are very annoying. You are supposed to tell them where you are at all times and they can come take those samples at any time with crazy instructions like they can be standing there when you pee into the cup etc. Many athletes hate them so at some point some athletes just stop caring and just ignore them and that is a doping offense. Not that you took anything but that you were not present for testing.

That is how John Ngugi the 5,000 metre Olympic Gold medalist in Seoul 1988 got banned. 2 mzungu strangers just showed up at his house in Nyahururu sometime in 1993. He did not know them and had not been told they were coming. They said they wanted to take his blood and his urine for testing. He refused and dismissed them without thinking much of it. Next day he had that he had been suspended for 4 years. He never recovered. By the time the suspension was over he weighed 100kg.