Two of 402 athletes at track and field's world championships in August tested positive for the designer steroid THG, the sport's worldwide governing body said Saturday.
The International Assn. of Athletics Federations did not identify the names or nationalities of the two athletes. It was not certain if the two were among the five -- four Americans and British sprinter Dwain Chambers -- known to have tested positive for THG.
A steroid offense typically draws a two-year ban from competition. THG, or tetrahydrogestrinone, was discovered this summer as a steroid tweaked to avoid detection by standard drug tests. The IAAF vowed to re-check samples from the August world championships in Paris after the Olympic-accredited lab at UCLA devised a test to detect THG.
The identities of the four Americans who tested positive for THG have not been officially disclosed. But news reports have identified three -- middle-distance runner Regina Jacobs, shotputter Kevin Toth and hammer-thrower John McEwen.