Does anyone know if saliva can stay viable for about 5 days, before it gets suspended into a DNA genealogy vial for testing?
Background: My brother wants to do a DNA genealogy test at a US testing facility. The country he lives in doesn't allow it, however. For some reason FedEx has no problem with shipping his saliva to me in the U.S. The fastest they can do is 4 days. Will it still be viable to test? Or will it have gone bad somehow? He wants to ship it tomorrow.