Gezzar has been ruled out of the Olympics last week after the federation said he had tested positive June 17 during the French elite championships. The 32-year-old runner finished fourth at the European championships in Helsinki that month.
Gezzar could be banned from the sport for life since this is her second doping offence. He served a two-year suspension after testing positive for a banned anabolic steroid and a diuretic in 2006.
The FAA said in a statement Tuesday that a decision on the ban will be made at the next meeting of its disciplinary commission.
The London Olympics start on Friday.