This was announced in an interview with commentator Brendan Fitzgerald by UFC Vice President Jeff Nowitzki.
“The Australian Commission released a statement saying they have no credible evidence that anyone has broken the rules,” Nowitzki said. “I think we’ll stop there, especially since they have a special rule according to which saline droppers are not allowed to be used for rehydration. So, neither the volume of saline nor the involvement of medical personnel does not matter. Perth bans such drips.”
On February 11 at UFC 284 in Perth, Islam Makhachev successfully defended the UFC lightweight championship belt, defeating Alexander Volkanovski by unanimous decision, after which the Australian team announced that the Russian had violated anti-doping rules by using droppers to recover from the weight race.
The Russian side called these accusations nonsense, and Makhachev called on the UFC and the Athletic Commission to look into the situation and punish the accusers for libel.