"USADA announced today that UFC® athlete Ian McCall, of Costa Mesa, Calif., has been granted a retroactive Therapeutic Use Exemption (TUE) and will therefore not face an anti-doping policy violation after receiving an intravenous infusion of a non-prohibited substance in February of 2017."
...
"After a thorough investigation of the circumstances surrounding the potential violation, which included the retroactive TUE application process, USADA determined that the athlete had a diagnosed acute medical condition for which the use of an intravenous infusion is consistent with the standard of care. Because McCall’s TUE application was granted retroactively, his use of a prohibited method will not result in an anti-doping policy violation."
Ian McCall Cleared of Potential Anti-Doping Policy Violation | USADA
...
"After a thorough investigation of the circumstances surrounding the potential violation, which included the retroactive TUE application process, USADA determined that the athlete had a diagnosed acute medical condition for which the use of an intravenous infusion is consistent with the standard of care. Because McCall’s TUE application was granted retroactively, his use of a prohibited method will not result in an anti-doping policy violation."
Ian McCall Cleared of Potential Anti-Doping Policy Violation | USADA