I have the same question??? I know that the olympic lifters do this all the time and that the olympic sprinters exp the weman do this all the time. You can pass a drug test using HGH by its self.
Last year I competed in the IPF powerlifting worlds all the Russian/bulgarians/eastern block countries were strong as hell and looked like bodybuilders but they all passed the drug test.
A few admitted to using HGH but it is not on the banded substance list because they cant test for it. Also what would the sides be comparied to AS if you only took it by itself. Also would it mess up your own hormone levels. What does everything think???