The planned changes include reinstating a version of chromosome testing that was discontinued in the 1990s, requiring athletes who compete in the female category to submit to a cheek swab or dry blood-spot test for the presence of a gene that indicates whether the athlete has a “Y” chromosome present in males.

World Athletics President Sebastian Coe said the testing plan is “not just talking about the integrity of female, women’s sport but actually guaranteeing it.”

World Athletics president Sebastian Coe announced Tuesday that female track and field athletes will undergo random genetic testing in order to maintain "the integrity of the game."