Neil Jones was drug tested after "every single competition" early on in his career.
The "Strictly Come Dancing" star revealed that he was constantly checked for illegal substances after competing as the person administering the tests "didn't really like" him - although Neil, 37, confessed he "didn't care" as he was confident he'd pass every time.
During a discussion on "The Jeremy Vine Show" about whether to drug test teachers, he said: "I think its involving children so it's really important and when we were dancing we were checked all the time.
"On the other side, I do see it because the person that was always checking didn't really like me so he would check me after every single competition, every time. I didn't care I was happy because I knew [I would pass]. I didn't care because I knew I was always fine."
It was revealed earlier this year that Neil and his wife Katya, 35, will be returning to "Strictly Come Dancing" for a fourth stint on the show alongside the rest of the dancers from last year's series.
Neil and Katya both joined the show in 2016, but during those years Neil has never been partnered with a celebrity and with former Strictly champion Pasha Kovalev, 39, announcing last month he wouldn't be returning to the show, Neil teased he could be the one to fill the dancer's shoes.
He previously hinted: "Yeah, it [would be] great. It would be good. Fingers crossed, we don't know yet, but yeah".
The last season of the show saw Kevin Clifton, 36, and Stacey Dooley, 32, claim the GlitterBall trophy 31, after beating the likes of Pasha and his celebrity partner Ashley Roberts, 37.