Passler was reportedly tested out of competition.
Letrozole, which is used to treat cancer, can also be used to reduce high estrogen levels, media notes.
Passler will be suspended from competition but can appeal. However, time for this is limited, since the biathlon competition program at the Olympics starts on February 8, la Repubblica indicated.
This is the first case of doping being detected at the 2026 Winter Olympics, the media emphasized.
Passler is 24 years old and a world junior relay champion.
Her best result in the World Cup this season was 10th place at the Oberhof stage.
Context
The 2026 Winter Olympics are scheduled to take place in Milan and Cortina d'Ampezzo from February 6th to 22nd.
