NFL players ratified the new collective bargaining agreement Thursday afternoon, officially ending the lockout after 4 1/2 months.
The CBA includes blood testing for human growth hormone testing for the first time, with the goal for it to be implemented by Week 1 of the regular season, a source familiar with the talks told ESPN NFL Insider Adam Schefter.
The NFL will be the first major U.S. professional sports league to use blood testing for HGH.
NFL Players Ratify CBA