The World Anti-Doping Agency has set the list of banned substances for the London Olympics, allowing a previously prohibited asthma drug to be used to certain forms.

WADA's executive committee met in Lausanne on Saturday to approve the list that will apply to all accredited sports in 2012.

The list will not be published until until Oct. 1. The agency, however, said the asthma drug formoterol will be permitted when inhaled in "therapeutic doses."

WADA also said it plans to put more emphasis on collecting blood samples. It said only 4 percent of all doping samples collected this year were for blood, and it will aim to reach 10 percent next year.