Johanna Konta has expressed her dislike of the anti-doping requirements in tennis and believes the "invasive" procedures require an overhaul.
The British number one, who opens her Wimbledon campaign against Natalia Vikhlyantseva on Tuesday, has a missed test on her record due to a time zone mix-up in March.
Konta was not in when a designated tester visited her home as she had flown to Indian Wells, California on the Sunday before the hard-court tournament started.
She had reportedly informed UK Anti-Doping (UKAD) administrators of the change at 10pm on the Sunday evening but by that time it was too late.
"It's important to have integrity in this sport but I do feel there's definitely room for improvement in the way athletes are sometimes treated," she told reporters at Wimbledon.
"It was a mix-up of time zones more than anything. My whereabouts was for 6am on the Monday in London, but I flew on Sunday to Indian Wells.
"It was a tough one for me to swallow because it was a little bit out of my control. But since then I've just been trying to be extra vigilant on changing it even more in advance to try and avoid those sorts of mistakes."
Revealing the approach involved, the 27-year-old added: "It's quite a violating process: people come to your home. You're in your pyjamas. You get woken out of bed, told to take down your pants, give your arm, pee in a cup.
"It's an invasive process. It's something that comes with the territory, but I don't think it's something I will miss when I retire."