Baseball Expands Testing for HGH in Players Tests will be done in-season for first time By John Johnson, Newser Staff Posted Jan 10, 2013 3:29 PM CST 3 comments Comments This photo shows an injector pen that contains approximately a week's worth of HGH doses at a clinic at Northwestern University. (AP Photo/M. Spencer Green) (Newser) – Barry Bonds and others in the juicing club may never make it into the Baseball Hall of Fame, but now they've got a different kind of legacy: The league will start testing players' blood for human growth hormone during the season, reports Bloomberg. Current HGH testing takes place only in spring training or in the offseason. The agreement with the players' union also approves the use of a test to catch those using testosterone. "This is a very proud day for baseball," said commissioner Bud Selig, which is one way of looking at it. Still, the expansion of the league's drug testing arguably gives baseball the toughest standards among professional sports in North America, reports the New York Times. The NFL, for instance, doesn't test for HGH.