Amir Khan is still trying to figure out how Ostarine got into his system.
The British boxing legend tested positive for Selective Androgen Receptor Modulator (SARM), a drug designed to have testosterone-like effects, following his defeat to Kell Brook in February 2022.
Khan, who retired after his sixth professional defeat, was able to establish that his ingestion of the substance was unintentional, but UKAD ultimately handed him a two-year ban.
In April, the former unified welterweight world champion revealed he had spent £100,000 trying to determine exactly how the banned substance got into his system.
Several months later, he is still unaware of it and speculates that sharing a drink with one of his many friends who use performance-enhancing drugs could be the cause of his problems.
“It could have been due to someone’s drinking,” Khan told Boxing News.
“A lot of my friends take steroids because they want to get big. The new thing is that everyone wants to take steroids. Maybe I would have shared a drink with someone. But I’ve never cheated in boxing.”
Khan admits he is unhappy with the way his successful career ended.
He added: “The only small sign of sadness in my career is drug testing.
“If you look at the amount found in my blood – everyone has said it, but – UKAD (UK Anti-Doping) has made a statement. They said it wasn’t intentional, and instead of giving me a four-year ban, they gave me a two-year ban.
“You know why? Because I didn’t have the source to prove how it got into my system. If I had given them the source of how it got into my system, I would have won the case.
“It’s not like I lost the case because they said I didn’t cheat. I’m not a cheater.
Khan’s positive test result came at a time when several working stars have been caught having banned substances in their bodies.
Most notably, Conor Benn tested positive twice for clomiphene. Dillian Whyte, Robert Helenius, Joe Cusumano, Alberto Puello and Alycia Baumgardner have also reported unfavorable results during doping tests.