COLORADO SPRINGS, USA (AP) - The United States Anti-Doping Agency is reporting sprinter Debbie Dunn has accepted a two-year suspension after testing positive for a prohibited substance.
USADA says lab tests of a sample provided by the 34-year-old Dunn at the US Olympic trials resulted in an "adverse analytical finding for an anabolic agent."
Dunn finished fourth in the 400 meters at the trials in June. She was selected for the American relay pool, but took her name off the team roster before the London Games after her positive test for excessive testosterone.
She is the 2010 world indoor champion at 400 meters.
The suspension began on August 1, which is the date she accepted a provisional suspension.