Purification and enrichment of intact plasma/serum exosomes for functional studies; No time-consuming ultracentrifugation, filtration nor special syringes required; No precipitation reagents nor overnight incubation required; No protease treatment required; Compatible with plasma/serum from any species; Pure exosomes are purified and are free-from any other RNA-binding proteins; Purified exosomes can be analyzed using NanoSight® or Electron Microscopy for assessing the approximate exosome size range and concentration.