The Germany-based player was part of the team that helped their country to reach two successive finals of the continental tournament.
The 21-year-old is among three players in the squad accused of being men but insists she is female.
â€œI first heard these accusations back in 2006 and 2008,â€ said Anonma. â€œI have already been (gender) tested, which I find offensive.
â€œThese accusations come because I am fast and strong, but I know that I am definitely a woman!â€
Guinea refute gender claims