Sorry you are having such a hard time. If you decide to consider hair testing, spend some time on the Nutritional Balancing forum. You can get a lot of information there.
ARL is the lab that I use, and I believe they do an excellent job of testing. The right amount of copper in our bodies is very important, and it can be corrected. Check out their site, www.arltma.com. Also, I use a practitioner trained by Dr. Larry Wilson, and he has helped me tremendously to heal. His site is www.drlwilson.com.
Pam Killeen is another excellent practitioner. Feo, a poster, works with her. Check out her site. She has an audio on her articles page that gives a thorough overview of NB. I think it's called the Five Prongs of Nutritional Balancing.