College wrestlers are randomly tested at their schools, and some are tested at NCAAS. Internationally, US National team members are subjected to random drug tests without notice. They will literally show up at your door at 6:30 a.m. in the morning to get their ruine sample.
Athletes are required to record what their whereabouts will be if they will not be in town of their permanent residence, such as gone for a few days visiting family etc. If a wrestler is not present when they show up, they will receive a message that USADA is looking for them... They might be working out, at the grocery store, etc. and the USADA rep. will come meet you where you are, (within reason ) or wait if the athlete will return shortly. A no-show, no response, or an, "I am out of town," will get you dinged and you are only allowed a couple of those before you are suspended for a year.. That happened to one US Greco-Roman wrestler... I know of one college wrestler, that was on the US National Team, who had the USADA rep. show up in the wrestling room during practice. The same wrestler had USADA show up at 6:30 a.m. on a sunday morning at his girlfriends house for a sample as well. Finalists at Final X, and medalists at the World Championships are tested.