Career
During the semifinals Halkia set an Olympic record of 52.77 seconds. On August 16, 2008, during the 2008 Summer Olympics in Beijing it was announced that she tested positive for the banned substance methyltrienolone. Chalkia denied she has taken any banned substance, and asked for her "B" sample to be tested, which also tested positive the next day.
On December 12, 2008, the IAAF announced that she would be banned from the sport for two years.