Here are some thoughts
about pros and cons of genetic testing. Genetic counseling is usually performed after testing, but it's possible that you could get it before hand. Insurance coverage is always tricky. The vast majority of us have not had any genetic counseling, either before or after testing. Many are tested by choice through 23andMe, without any understanding of what they are getting into.
Look into our Primer
as well. It's helpful not just for ApoE4 carriers, but anyone with a family history of Alzheimer's.