IOC Mandates Genetic Testing to Bar Transgender Women from Female Olympic Categories

The International Olympic Committee announced on March 26, 2026 that only biological female athletes will be eligible to compete in female category events at the Olympic Games, with eligibility determined by a one-time test for the SRY gene. The policy, which takes effect from the LA2028 Olympics onwards, effectively bars transgender women from competing in female Olympic categories. The rules apply to the Olympic Games, Youth Olympics, and all Games qualifiers. The announcement followed an 18-month consultation phase and marks a significant departure from the IOC's previous approach of delegating eligibility decisions to individual international sports federations.

Coventry reverses predecessor's hands-off approach IOC President Kirsty Coventry, who took office in June 2025, moved quickly to establish a uniform policy after her organization had long declined to apply any universal rule on transgender participation. Under the previous approach, adopted in 2021, international federations were instructed to develop their own guidelines, producing years of fragmented regulation and major controversies. Coventry described the new policy as grounded in science and led by medical experts.

„At the Olympic Games, even the smallest margins can be the difference between victory and defeat. So, it is absolutely clear that it would not be fair for biological males to compete in the female category. In addition, in some sports it would simply not be safe.” — Kirsty Coventry via RTE

She also addressed the sensitivity of the issue directly at a press conference.

„I really believe this policy is foundationally based in science and led by medical experts. We know that this topic is sensitive. Safety on the field of play and fairness. One of the things we like to see in sport is fair and equal treatment of everyone on that field of play.” — Kirsty Coventry via RTE

The IOC stated that the presence of the SRY gene is "fixed throughout life" and represents "highly accurate evidence that an athlete has experienced male sex development." Screening will be conducted via saliva, cheek swab, or blood sample and will be required only once in an athlete's career. The IOC described the method as unintrusive compared to other testing approaches. The new rules carry no retroactive power and have no impact on grassroots or amateur sports, with rare exceptions acknowledged by the body.

France warns tests clash with national bioethics law The French National Olympic and Sports Committee responded to the announcement with a statement raising both ethical and legal objections. The committee said the SRY tests raise "major ethical and scientific concerns for all those affected." It specifically flagged that conducting such tests in France would conflict with existing bioethics laws and the civil code, which currently prohibit their use in laboratories in the country. The French body did not indicate whether it would seek an exemption or challenge the policy through Olympic governance channels. The reaction from France underscores the practical complications that the new universal standard may face in jurisdictions with differing legal frameworks around genetic testing.

The IOC had previously issued guidance in 2021 instructing international sports federations to develop their own transgender eligibility rules, stepping back from a universal standard. This decentralized approach produced inconsistent policies across different sports and fueled repeated controversies at elite competition level. Kirsty Coventry, a Zimbabwean former competitive swimmer, became IOC President on June 23, 2025, succeeding Thomas Bach, who had served in the role from 2013 to 2025. Coventry is the first woman to hold the position. She signaled immediately upon taking office that the IOC would assume direct responsibility for setting a uniform eligibility framework.

Policy expected to ripple across international federations The IOC's new standard is widely expected to be adopted by international sports federations, potentially making SRY gene testing a universal requirement for female elite sport beyond the Olympics alone. Previously, transgender women had been eligible to compete at the Games once cleared by their respective federations, meaning eligibility varied by sport and governing body. The new policy aligns with a broader trend in elite sport toward stricter biological sex criteria for female competition categories. Supporters of the measure argued it protects competitive fairness and safety in women's sport, while critics warned it risks stigma and harm to young athletes, according to reporting by Reuters. The IOC did not specify in its announcement how it would handle cases involving athletes with intersex conditions or other variations in sex characteristics, noting only that rare exceptions exist.

IOC Transgender Eligibility Policy: Decision-making authority (before: Delegated to individual international federations (2021), after: Centralized IOC universal standard (2026)); Eligibility test (before: No universal test; federation-specific criteria, after: One-time SRY gene screening via saliva, cheek swab, or blood sample); Transgender women eligibility (before: Eligible once cleared by respective federation, after: Barred from female category events); Mandatory from (before: N/A, after: LA2028 Olympics onwards)