Norgen’s Saliva Exosome Collection and Preservation Kit is an all-in-one solution designed for 1) simple and non-invasive saliva collection; 2) preservation of exosomes in saliva samples at ambient temperature; and 3) isolation of high quality intact exosomes and exosomal RNA in a laboratory setting. The Saliva Exosome Collection, Preservation and Isolation Kit contains 50 Individual Saliva Exosome Collection and Preservation Devices, as well as the required reagents for the subsequent laboratory purification of intact exosomes and isolation of the exosomal RNA from the preserved samples. Each of the 50 individual Saliva Exosome Collection and Preservation Devices consists of 3 components: (1) Saliva Collection Funnel and Collection Tube that contains Norgen’s Urine Preservative in a dried format, (2) Collection Tube Cap, and (3) ID Label. The saliva exosomes in preserved samples is stable for 2 years at room temperature.