World Athletics has announced new eligibility regulations requiring athletes who wish to compete in the female category at world ranking events to undergo a one-time SRY gene test, effective from 1 September 2025.
The new policy will debut at the World Athletics Championships Tokyo 25, beginning on 13 September. The SRY gene, a reliable genetic marker for biological sex, will be tested through a cheek swab or blood sample.
“Our priority is protecting the integrity of women’s sport,” said World Athletics President Sebastian Coe. “In elite competition, gender cannot override biology. This test confirms biological sex and ensures fair play in the female category.”
The SRY testing will be administered by Member Federations as part of their athlete preparations. Coe emphasized the measure as a step toward safeguarding opportunities for female athletes.
“Athletics must remain a space where women know they are competing on a level playing field,” he added.
Key Updates in the New Regulations:
One-time SRY gene test for female category eligibility, Pre-clearance requirement for all athletes competing in the female category.
Merging of regulations for athletes with Differences of Sex Development (DSD) and transgender athletes into a single policy and Transitional provisions for athletes currently in the competition pipeline.
Under the updated Eligibility Rule 3.5, athletes who may compete in the female category include: Biological females- certain biological males with Complete Androgen Insensitivity Syndrome.
Biological males with DSD, subject to specific transitional provisions. Individuals who used testosterone for male gender-affirming treatment can only compete after a minimum of four years and with case-by-case approval.
Standing Commitments by World Athletics: respect for gender identity and individual privacy, full compliance with data protection laws and no requirement for surgery as part of eligibility.
These changes were informed by the recommendations of the Gender Diverse Athlete Working Group, established in 2024, and follow a year-long consultation involving legal, scientific, and social considerations.