I did my hair analysis a few years back. My doctor tols me I should not mentiones who had done it for he could loose his licence to practice medicine for doing so as it is not recognized by doctors in Canada.
The hair analysis is not recognized because it is not thought to be reliable enough. Yet, this is what they use in order to certify that someone has been poisoned, so as far as toxicity is concerned there should be enough accuracy to send someone to prison for poisonning.... but not enough to diagnose toxicity!!!! How does this make sense to you.
I was really thankful when I got the result not only could I confirm I had mercury, lead and aluminum toxicity.... but also I could tell in which nutrients I was deficient and supplement accordingly.