"Tests were done on Aug 7, at the recommendation of the association's doctor, we don't know the results yet," Athletics South Africa president Leonard Chuene told a media conference here.
"I can no longer stand before you and say that I am not aware of gender tests conducted on Caster Semenya," Chuene told a press conference.
"I felt that at the time I was acting in the best interests of Caster Semenya as a person. I believed at the time my consistent denials would help protect her. "I was not going to stop her talent because of rumours," he added.
"On what basis should I have withdrawn her? My only crime committed was to take a decision that she must run, and she won. Tell me someone who has not lied to protect a child."
Chuene had maintained that no tests had been conducted on the masculine 18-year-old athlete, who has been the subject of a controversial sex row since winning a gold medal in the 800m race at the IAAF games.