The 2026 Winter Olympics in Milan-Cortina concluded with zero positive doping tests during the Games, marking a significant milestone for clean sport. The International Testing Agency implemented its most extensive pre-Games testing program ever, with 92% of participants tested at least once in the six months leading up to the event. This proactive approach represents a major shift from testing only during competitions.

The enhanced testing regime did uncover one alleged positive case before the Games began. Italian biathlete Rebecca Passler tested positive for Letrozole metabolite and was provisionally suspended by Italy's anti-doping agency. However, she successfully appealed and competed in Milan-Cortina. The World Anti-Doping Agency confirmed the decision remains provisional pending a future hearing. Letrozole is a drug used to lower oestrogen levels and treat breast cancer.

Former British bobsleigh athlete John Jackson highlighted the importance of these measures, recalling how his team waited almost six years to receive bronze medals from Sochi 2014 after Russian competitors were disqualified for doping. While praising the progress, Jackson argued that lifetime bans remain the only effective deterrent, noting that dopers will always try to stay ahead of testing methods.