Caster Semenya won gold in the 800m at last night's World Championships, but she could be stripped of her medal if officials aren't satisfied with the results of gender tests. Her family, meanwhile, swears she's a female.
Semenya ran her race in an impressive 1:55.45, more than two seconds faster than silver medalist Janeth Jepkosgei of Kenya. But suspicions that she is not "entirely female" require her to undergo "extremely complex" gender testing, including examinations by an endocrinologist, a gynecologist, and a "gender expert." Officials of the International Association of Athletics Federations clarify that they don't believe Semenya has cheated by undergoing a sex change or hiding her true gender — rather, they think she has a "medical condition," such as some combination of male and female chromosomes. She will lose her medal if she is found to be "male," but it's not clear exactly what that means in her case, or what will happen if tests determine she is intersex.