1. Considering that the IEF-DB Method which is a “direct detection method” codified by TD2007EPO and TD2009EPO (Technical Document issued by WADA) has been applied for years to detect the presence of rEPO in the sample provided by the athlete and has also been repeatedly validated by the CAS jurisprudence, the application of the new identification criteria under TD2009EPO to address, as “Other Epoetins”, the new types of EPOs does not require a new validation. The application of the SDS-PAGE Method cannot be considered to be a mandatory supplement to the IEF-DB Method under TD2009EPO in every case. If a doubt exists as to the origin of the EPO found in a sample not showing a typical endogenous profile, the SDS-PAGE Method can be applied (as additional evidence) to discriminate between forms of EPO on the basis of a different, compared to the IEF-DB Method, principle: not the acidity of the molecules, but their mass.