Sonnen went on FOX Sports 1's America's Pregame show on Tuesday afternoon, where he explained the reasons behind his failed drug test, and whether he believed he was using banned substances.
"There is a huge distinction between illegal versus banned," Sonnen told host Mike Hill. "These are perfectly legal substances. These are not performance-enhancing drugs. These are not anabolic. These are not steroids of any kind. Look, they [the Nevada State Athletic Commission] changed the rules and I've got to comply with the rules. However, there is a transition period and I couldn't have been more open or more transparent. Whether it was UFC TONIGHT, whether it was different interviews, anybody that I could tell or talk to about this, I did. And these are the medications that you have to go on to lead a healthy life. If they're asking me to choose between my health and my sport, that's not a choice I can make. I've got to choose health."
The two-division contender also stated that he specifically started using these banned substances when the commission banned the use of Testosterone Replacement Therapy several months back.
""I had to take these drugs because they banned testosterone. So to be in compliance, you have to stop with testosterone. Now there's a transition phase, to come off of testosterone healthily. I have a legitimate medical need for testosterone. I was not an abuser. I was a user of testosterone. So when you come off of this and you have a medical need, you must transition. What you'll take is Clomiphene and HCG. I took Clomiphene and HCG. This also serves as a fertility drug. That was an accident. I was having fertility issues. That's not part of my life that I wanted to share with anybody else. And we had success. I took these substances. They're not illegal and not performance enhancing."
While Sonnen is aware that he is using a banned substance, he believes there is a vast difference between his level on game day and for the remaining 364 days of the year.
"Yes, it is on the banned list. But you have to understand, that's for competition. If this was game day, I would not be making any of these statements I'm making to you right now. On game day, you have to come in right. But out of competition, an athlete cannot take an anabolic, he cannot take a performance-enhancer and he cannot take a steroid. The former executive director has many quotes out there that I will bring in to the Commission when I appeal this thing, stating that there is a significant difference between game day and the other 364 days of the year."