The Kircher variation of the name was added to the works of Charles Kirchner ( or is it Kerchner, I forget.)He lives in Pennsylvania and is a very serious researcher and very knowledgeable on this DNA deal.
You asked about the DNA Tests....
The DNA samples are acquired by the use of a cotton swab to the inside cheek of any male.This is submitted for analysis, and the project leader notified. (Charles)
There are a number of tests that can be run from that sample. Different marker counts (the more counts the more detailed the results and more accurate the "hits". Naturally the costs vary with the counts, and types of analysis you choose.I initially took the smallest, and over time added the markers up to the current max of 37.
The company is on the up an up.National Geographic has since my "joining" chose familytreedna to do their world wide dna project, which is still in progress.
Fortunately I may have some information for you.
From prevous exchanges of information of Kircher and Kirchert researchers, combined with the massive amount of data that was graciously given to me by the daughter of what may to date be the biggest Kircher genealogical researcher to date, plus my meager 8 years or so as a researcher.The short of it is is that your in luck.
I have, much, but all of your family so far back to around 1801.If you will contact me personally I will be happy to help you jump start your research by sharing that information, free of charge.If I can think of her name I can also introduce you to a new cousin that is also researching this same line....no promises, but I'll look through my old correspondence.
Please contact me at my personal e:mail address for continued discussion of this. firstname.lastname@example.org