Caster Semenya loses appeal against testosterone regulations

Olympic 800m champion vows to fight Swiss court ruling

Olympic 800m champion Caster Semanya has vowed to fight the Swiss Court Ruling. Picture: Getty Images

Caster Semenya has lost her appeal to the Swiss Supreme Court against the World Athletics regulations which restrict testosterone levels in female athletes.

The South African was challenging the regulations which mean she is not allowed to compete in events between 400 metres and a mile without taking testosterone-suppressing drugs. They were upheld last year by the Court of Arbitration for Sport.