The company that I used to analyze a DNA sample was Family Tree DNA www.familytreedna.com. However, I submitted the sample as a member of the Johnson/Johnston "family" DNA study. To find out about this go to www.clanjohnston.org and go to Links, then Genealogy. There are two DNA studies that you can link to - the Johnson/Johnston study and the Border Reivers study. When you submit a sample to FTDNA they will post your results and you can also designate the results to be forwarded to either or both of these studies. I recommend both. If you don't make any designation, but just want your results posted at FTDNA with an analysis of your closest genetic relatives, you can do just this. FTDNA in turn will give you the option of having your results posted on an international study, called Ysearch, as well as the FTDNA site. Practically speaking, the US is so far ahead on this that most of the samples on Ysearch came from FTDNA and our Australian and NZ brothers seem to be using FTDNA also. There is a dearth of samples from Johnstons who live in Scotland (a shame, IMHO). The beauty of the Johnston/Johnson study is that they will classify and compare you to all other Johnsons and Johnstons - both exact matches and near misses that probably represent mutations from an original Johnson/Johnston line (or, you may be the mutant - judge for yourself). I found the Border Reiver study just plain fascinating - they analyze all of the DNA types from descendants of borderers (the "haplotypes") and find some fascinating things. For example, there are descendants of borderers walking around with Persian and Middle Eastern DNA types. How did this happen? The Romans brought mercenaries to Britain from all over their empire, and the mercenaries procreated and left their DNA. The number of submissions to FTDNA is growing by leaps and bounds. I have a hundred or so "near miss" cousins, mostly with Scottish and Irish surnames (lots of them named Hudson, Harris, Moore, Neal, etc.). The genetic link with these guys is probably 600+ years back. FTDNA offers a 12, 25 or 37 marker study (with costs that go up). I recommend that you go for broke and get at least the 25 if not the 37. The 12 marker study doesn't tell much, IMHO. Hope that this answers a few questions Bob Johnston