The 28-year-old posted the video to his Instagram stories before 8am. In the footage, a gentleman can be seen reading through a list of questions which AJ has to answer.

Joshua posted the video with the caption, “Drug testers knocking early doors”.

Two of the questions read are:

Has the athlete performed altitude simulation in the last two weeks?

Has the athlete donated blood in the last three months?

Joshua responds “No” to both questions.

AJ receives a visit from drug testers 
 The surprise visit comes just 12 days after Joshua’s emphatic victory over Wladimir Klitschko.

An 11th round TKO led to the Olympic gold medallist retaining his IBF title and claiming the vacant WBA and IBO belts.