Some in the United Empire Loyalists' Association of Canada (UELAC) DNA session, 29 May 2015, were interested in learning more about using DNA in adoption research.
Here are the additional links I suggested. These will be helpful to anyone interested in using DNA for genealogy.
First, check the International Society of Genetic Genealogy (ISOGG) website and wiki. This is the link to the ISOGG wiki section on DNA Testing for Adoptees: http://www.isogg.org/wiki/Adoption
I recommended Richard Hill's website DNA Testing Advisor: http://www.dna-testing-adviser.com and his books, available through his site, Finding Family: My Search for Roots and the Secrets in My DNA, 2012, and Guide to DNA Testing: How to Identify Ancestors, Confirm Relationships, and Measure Ethnic Ancestry through DNA Testing, updated 2014.
And I recommended the DNA Adoption website. Great information on specific topics for DNA and adoption questions, but also for the many analytic tools now available. DNA Adoption sponsors on-line classes too: http://www.dnaadoption.com
I wish you many DNA discoveries!