The PAXgene Blood RNA Tube (IVD) is a component of the PAXgene Blood RNA System, which additionally includes the PAXgene Blood RNA Kit (IVD) for nucleic acid purification. The PAXgene Blood RNA System is intended for the collection, transport and storage of blood and the stabilization of intracellular RNA in a closed tube with subsequent isolation and purification of intracellular RNA for RT-PCR used in molecular diagnostic testing.