Canelo Alvarez tests positive for clenbuterol, GGG fight still onCanelo Alvarez tested positive for a banned substance but cited a meat contamination for the test.SI Staff|Share on FacebookShare on XAdd us as a preferred sourceCanelo Alvarez has tested positive for trace levels of clenbuterol as part of his voluntarily drug testing ahead of his fight with Gennady Golovkin on May 5.Add us as a preferred source on GoogleFollowLoading recommendations... Please wait while we load personalized content recommendationsPublished Mar 5, 2018 | Modified Mar 5, 2018SI STAFFShare on FacebookShare on XHome/Boxing