The NFL is moving closer to an agreement with the NFL Players' Association on a new drug testing policy that would include HGH (human growth hormone) testing, according to reports Thursday.

One of the issues that still remains unsettled is the handling of appeals. reported that an HGH testing agreement would allow for an independent arbitrator to resolve appeals of positve tests.

There's also an issue yet to be determined regarding disciplinary action for violations of the policy.

The Washington Post reported Wednesday that Denver Broncos wide receiver Wes Welker's four-game suspension for performance-enhancing drugs accelerated the discussion on the issue.

Before that, U.S. Sen. John McCain (R-Ariz.) called on the NFL to implement testing for HGH.

Expected to be part of the new policy are harsher DUI penalties, reclassifying amphetamines and boosting marijuana thresholds.