Dozens of former NFL players will be administered human growth hormone as the NFL and its players union try to determine the impact of use on players' HGH levels, three people with knowledge of the plan told USA TODAY Sports on Wednesday.
The tentative plan is for roughly 100 former players to participate in the study, with two-thirds receiving HGH and the other third receiving a placebo. Their HGH levels will be measured before and after the trial.
It's part of the scientific design of the population study that will include blood draws from all current players to determine the so-called decision limit — i.e. the highest HGH level a player can have without facing discipline under the new performance-enhancing drug policy that is still being finalized, the people said.
http://www.usatoday.com/story/sport...ster-hgh-to-former-players-for-study/2655301/