The Tricky Science of Olympic Gender Testing

First time accepted submitter erdos-bacon sandwich writes "Gender tests may be the most controversial obstacle the athletes face. The London Games tries a new approach based on testosterone. Of all the obstacles athletes have had to overcome to compete in the Olympics, perhaps the most controversial has been the gender test. Originally designed to prevent men from competing in women's events, it is based on the premise that competitors can be sorted into two categories via established scientific rules. But the biological boundaries of gender aren't always clear."

Comments

Is it true that Chinese girl pass all drug tests?

[Taco Cowboy]

I am talking about that 16 year old Chinese girl, Ye Shiwen, who broke a world record in swimming competition, resulting in a respected American swimming coach John Leonard, who also happen to be the US executive director of the World Swimming Coaches Association, said that Chinese girl must have been using "genetic manipulation" to enhance athletic performance
 
Is it true that the Chinese girl has passed all the drug testing?
 
Is it true that she is clean?