The Callen/Callan/Callin and other variations DNA testing project is at Family Tree DNA, who has the largest database of Y-DNA in the world.

http://www.familytreedna.com/public/CallenDNA/default.aspx

Exciting new tests are revealing more and more to help with genealogy. Y-DNA is a valuable tool to break through those "brick walls".

If you have any questions please email me at stancourtney@hotmail.com.

I do not sell test DNA kits, nor do I make any money from the sale of test kits. I am strictly a volunteer for the Callen/Callan/Callin and other variations DNA testing project.