Abstract: The present invention relates to a method for rapid stabilization of fluid biological samples, such as blood samples. More specifically, the method is based on heat stabilization of the fluid biological sample absorbed in a matrix.

Abstract: A device for storing a biological sample (3) and allowing transfer of heat for disrupting secondary structures of the biological sample (3) is disclosed. It comprises a biological sample carrier (5) having a portion (7). The portion (7) is intended for receiving a biological sample (3). It also comprises at least one sealing means (9, 13, 15) for sealing the portion (7), a heat transfer segment (11) that extends at least essentially through at least one of the portion (7) and the sealing means (9, 13, 15), and presents a ratio between a heat conductivity of and a thickness of the heat transfer segment (11) that is larger than 500 W/m K in order to enable heat transfer to the biological sample (3) via the heat transfer segment (11). Also, a method for preparing the biological sample (3) is disclosed.