Commissioner Tim Finchem said he hopes the various golf tours around the world could coordinate such a plan.
On the eve of the tour's first stop after the U.S. Open, the Travelers Championship at the TPC River Highlands course, Finchem said specifics of a testing plan could be announced prior to the start of the 2008 season.
"We're getting close on that," he said. "I suspect we'll be done with that certainly this year."
Both the European Tour and the LPGA Tour have taken steps toward creating a drug policy.
"I think it's important that golf deal with this collectively," Finchem said.