Catcher Jonathan Jaspe is batting .341 in 12 games with the single-A Lansing Lugnuts this season. ((Courtesy Wendy Smith/Scout.com))

Toronto Blue Jays minor-league catcher Jonathan Jaspe was suspended 50 games by Major League Baseball on Friday after testing positive for nandrolone metabolites, a performance-enhancing substance.

Signed as an undrafted free agent in 2003, Jaspe is currently in his second season with the single-A Lansing Lugnuts.

In 12 games, the 23-year-old Venezuelan is batting .341 with a home run and 12 runs batted in.

On April 11, baseball players and owners agreed to amend their drug agreement to allow for more frequent testing.

MLB commissioner Bud Selig also rescinded 15-day suspensions assessed last December against Kansas City Royals outfielder Jose Guillen and former Baltimore Orioles outfielder/designated hitter Jay Gibbons.

As part of the agreement, major leaguers, including those named in December’s Mitchell Report, will join MLB's efforts to educate youth about performance-enhancing drugs. The players’ association will contribute $200,000 to an anti-drug organization.

In exchange for those two provisions, Selig agreed not to discipline players implicated by former Senate Majority Leader George Mitchell during his 18-month investigation.

Guillen and Gibbons were suspended in December following media reports linking them to performance-enhancing drugs. Those penalties were put on hold just before opening day as negotiators neared an agreement.

The new joint drug agreement is in force until Dec. 11, 2011, when baseball’s labour contract expires.

With files from the Canadian Press