IAAF is cleared to return to competition by officials in her native Moscow . But now the Veronica Campbell-Brown , track and field 's world governing body , will decide if she can come back . While not necessarily performance enhancing , diuretics can be used as a masking agent for steroids . The one -time Olympic gold medalist , tested positive for a banned substance in May . Jamaican sprinters Asafa Powell and Asafa Powell said in July they also tested positive .
IAAF is cleared to return to competition by officials in her native Moscow . But now the Veronica Campbell-Brown , track and field 's world governing body , will decide if she can come back . The one -time Olympic gold medalist , tested positive for a banned substance in May . Jamaican sprinters Asafa Powell and Asafa Powell said in July they also tested positive .