Following the 2020 introduction and publication of the Crowley Clinical Criteria (c) for gender identification cards to exclude male athletes with transgender, intersex and Sweyer syndrome in women’s sports events, to the International Olympic Athletic Federation (IOAF), and the International Council of Arbitration for Sport (CAS) in Lausanne, Switzerland on October 19th, 2020, now World Athletics Council (WAC) president Sebastian Coe has finally announced (July 31st, 2025) that gender identification testing based on the Crowley Clinical Criteria will be introduced at the 2025 September World Championships in Tokyo, Japan on September 13th this year, and that from September 1st all female athletes will have to undergo “a cheek swab or blood test” to determine their biological eligibility to compete in the female category for world ranking events.
Following the much publicised controversies of International athletics’ Caster Semenya (South Africa) and Olympic boxing’s Imane Khelif (Algeria), reporter Leah Sarnoff noted on ABC News (July 22nd, 2025) that transgender (male to female) athletes will no longer be eligible to compete for the United States in the Olympic or Paralympic Games in women's categories, after a recent policy change from the U.S. Olympic & Paralympic Committee (USOPC).”
It now appears that currently undisputed modern scientific testing of sexual identity determinants previously proposed as the three “Crowley Clinical Criteria©" for determination and exclusion of Transgender athletes (Male to Female), Intersex athletes or Sweyer Syndrome males participating in Women’s sports should all now undergo Sporting Identification Protocols and should be issued with personal gender identification cards to be presented prior to competition.
Under the new policy change, any one of 3 exclusionary tests may be performed:
1) elevated testosterone levels in the male range,
2) demonstration of male internal genitalia by Ultrasound/CT/MRI scans,
3) demonstration of XY chromosomal (mouth swab or blood) analysis.
Recommendation
For a level playing field, and for the full participation of all athletes, it is recommended that all athletic and future sporting events have three categories: Male (M), Female (F) and Transgender/Intersex/Sweyer (TIS) classifications.
Dr. Leo M. Crowley MB, ChB, MD, MPH.
Executive Medical Director,
The Crowley Institute for Preventive Medicine
