Caster Semenya has told the International Association of Athletics Federations to focus on catching dopers after her first race following an appeal against the governing body.
The double Olympic 800m champion has appealed the Court of Arbitration for Sport (CAS) ruling which approved the IAAF’s plans for a new testosterone limit.
It is for female athletes who want to compete internationally between 400m and a mile.
Semenya can temporarily run after the ruling was suspended by the Swiss Federal Tribunal with the appeal pending.
She is battling to defend her 800m title at the World Championships in Doha later this year and has been included in South Africa’s provisional squad.