Athletes will be permitted to participate in the women’s category for international competitions, such as the world championships, only after completing a one-time genetic test.
The SRY gene test, required just once to help determine biological sex, can be done through a cheek swab or blood sample. The testing process will be managed by member federations, with the new rules taking effect on 1 September, ahead of the world championships in Tokyo.
“In a sport that consistently aims to encourage more women to participate, it’s crucial they feel there are no biological barriers,” said Sebastian Coe, head of World Athletics. “Confirming biological sex is essential to maintaining fairness. At the highest level of competition, athletes in the women’s category must be biologically female.”
“It was clear to both me and the World Athletics Council that identity should not override biological factors. We appreciate our member federations for supporting these changes.”
The sport has long discussed eligibility rules for women’s events, including concerns over advantages held by transgender athletes and those with differences in sex development (DSD). Current regulations prevent transgender women who underwent male puberty from competing in women’s events, while female DSD athletes with elevated testosterone must reduce their levels to qualify.
Earlier this year, a review panel concluded these rules needed strengthening, recommending the SRY gene test as part of updated guidelines. The test detects the Y chromosome, a marker of biological sex. World Boxing also adopted mandatory sex testing in May, using the same method.
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