Kevin Campbell I am thinking about joining the Campbell DNA project and I have a few questions.How do you go about joining ? Do you do the dna sample at home and mail it in? Do you recommend the 25 marker test?How long does it take to get the results back? I am from a large descendant group George & Caty Campbell of AMHERST/ NELSON COUNTY, VIRGINIA. I am a direct male Campbell descendant.I Hope this will tear down the brick wall i have ran into in my genealogy research. Cecil Campbell