Nearly two dozen scientists from laboratories around the world have signed a letter to the NFL and the players' association stating the current test for human growth hormone is safe, scientifically reliable and appropriate for use in professional sports leagues.
The letter, obtained by The Associated Press, was dated Oct. 3 and sent to NFL Commissioner Roger Goodell and union Executive Director DeMaurice Smith.
The NFL and the players agreed to begin blood testing for HGH as part of their new collective bargaining agreement, but only if the union agreed to the methods. The union has delayed implementing the test, asking for more scientific data to prove it is reliable.
The letter says, "Any suggestion in the press that its accuracy is a matter of debate is incorrect."