We like to say, just SPIT and SEND. But to use DNA as genealogical tool, you must test the right person. Follow this rule of thumb: Two things to consider if you wish to use DNA as a genealogical tool. 1) autosomal tests are reliable for about 5 generations, so you will want to test the eldest family members. 2) if on a budget consider both the health of family members and actuary tables . Harvard Health Publishing, Harvard Medical School, Why men often die earlier than women , 22 Jun 2020 Remember we are talking "rule of thumb." But, we suggest you test your eldest family members. Need DNA Analysis? Tracing Ancestors has partnered with a3Genealogy to help you use your DNA results as a tool for your brickwalls and biological family search. From Tracing Ancestors Marketing info@tracingancestors.org