after doing LOADS of research, different labs are better than others and use different procedures to conduct a test. hair analysis tests can be a very accurate way to determine the amount of heavy metals in tissues. but you need to use the right lab. below i have posted some brief articles with information that could help you find what you are looking for. my mother, three friends, and myself have used these tests and they read us like a book. we all felt just like the tests shown and i was able to find out i had severe copper toxicity through the lab although it is hidden.

this lab pioneered hair analysis and because of their extensive knowledge and experience, they are able to identify what's going on. the tests are cheap in my mind as well. since it was so interesting and i believed it to be a great way to test someones health and chemistry, i took three college level courses so that i could get an account with the lab. this way i can get tests cheaper and even help others if i wanted to. i need to get better first before i do that.

Difference betweent Analytical Research Labs and others below:
http://arltma.com/HairAnalysis.htm
http://arltma.com/FAQ.htm

Explanation about Mercury Toxicity identification through the lab:
http://arltma.com/MercuryToxNews.htm
http://arltma.com/MercuryToxDoc.htm

How metals can be hidden at first on tests:
http://arltma.com/HiddenToxMetalsNews.htm