The World Anti-Doping Agency (WADA) is claiming to have found abnormally high amounts of thymosin beta 4 (TB4) in frozen urine samples of two Essendon players from the Bombers 2012 list. 

It is unclear as to why ASADA did not have the samples analysed for the presence of TB4 at Cologne.

Is this the evidence that will finally land Essendon in trouble?