ASADA strongly denies allegations of evidence manipulation reported in the media.
The World Anti-Doping Agency (WADA) has sole responsibility for setting and determining prohibited substances. It is not possible to manipulate whether or not substances are prohibited.
Thymosin Beta 4 was included on the 2010 Prohibited List by WADA under a general category of substances being a growth factor affecting muscle, tendon or ligament, vascularisation and regenerative capacity.
The substance Thymosin Beta 4 was always banned before, during and after the Cobia investigation.
Thymosin Beta 4 has never been approved for human use.
Whether a substance was on ASADA’s former Check Your Substances tool has no bearing on its status as a prohibited substance on WADA’s Prohibited List.