This was vaguely aluded to in an article this morning.
Specifically about the hiding of it. Very convenient that this rumour then pops up the same day dont you think?
Yes, this has probably happened, but I call BS on your friend knowing the actual names involved.
Edit: Heres the article:
http://www.foxsports.com.au/league/...len/story-fnhkjm2b-1226616957740#.UWTjSFcWAvY
This the part i was talking about:
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But he also said: "As well, NRL players are reported to be conscious that some growth hormone-releasing peptides are difficult to detect in testing.
"Because these peptides will stimulate the release of natural hormones produced in the body, some NRL players have the belief that this makes these peptides 'undetectable' rather than difficult to identify in testing.
"Hence, players have risked using these substances."
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Im guessing your mate read the article and filled in the blanks/generated a rumor.