Muggs
Premiership Player
Ah, thanks, it was (unreliable as yet) physical evidence. So, this saga might be revisited in a few years.
Yup, WADA has funded two research projects in this area.
One to establish natural levels of TB4 and similar peptides, and another to distinguish between endogenous vs exogenous TB4 and similar peptides.
The projects started a few months before CAS, so might be while (if ever) before either gets accredited to a reliable enough level to establish use in its own right.