The International Association of Athletics Federations (IAAF) has criticized the lack of enforcement of drug tests after record-breaking performances.

Track and field's world governing body said Tuesday that three world records have been turned down this year because labs failed to test runners for the synthetic hormone EPO (erythropoietin).

IAAF general secretary Pierre Weiss says that athletes setting any record from 100-meters to 100-kilometers must be tested for EPO. The rule has been in place since 2004.

The lack of EPO tests has caused the cancellation of a record set this year by the American 4 x 400 meter indoor relay team. Russian Sergey Morozov's record in the junior 10-kilometer walk and the mark set by Ethiopian Olympic gold medalist Haile Gebrselassie in the 25-kilometer run were also canceled.