 She won the silver medal in 800 m at the 2005 Asian Championships in Incheon, South Korea.Soundarajan won a silver medal in the women's 800m race at the 2006 Asian Games held in Doha, Qatar clocking 2 minutes, 3.16 seconds.However, she underwent a sex test shortly afterwards, and the results indicated that she "does not possess the sexual characteristics of a woman".