Determining the capability of a liquid composition to inactivate an non-conventional transmissible agent (NCTA), comprises (a) incubating a NCTA with a composition to be tested, (b) chemically and thermally detoxifying the mixture, and (c) measuring the inactivation of NCTA. ACTIVITY : Cerebroprotective Neuroprotective Nootropic Anticonvulsant Antiparkinsonian. MECHANISM OF ACTION : None given.La présente invention concerne un procédé de mesure de laptitude dune formulation liquide à inactiver un Agent Transmissible Non Conventionnel (ATNC), en particulier un prion.