Caster Semenya will not need to take testosterone-reducing medication to compete after a Swiss court temporarily suspended a new IAAF ruling.

The Olympic 800-metres champion last month lost her challenge to the Court of Arbitration for Sport (CAS) against the implementation of a restriction on testosterone levels in female runners.

The ruling would have affected women competing from 400-metres to the mile. Following the decision by CAS, the South African took her appeal to the Federal Supreme Court of Switzerland, citing the need to defend fundamental human rights.

The IAAF say they are yet to receive notification of the new decision from the Swiss court.