DNA, Genetics & Family Health » DNA Testing Without Spit

How to do an AncestryDNA Test WITHOUT spit (YouTube)

How to get an elderly person to provide saliva sample for DNA?

Successful nuclear DNA profiling of rootless hair shafts: a novel approach

From PubMed, the US National Library of Medicine National Institutes of Health.

Your DNA Guide - How to Take a DNA Test if You Can't Spit