I had a hair analysis done by a friend of mine who is a bio-chemist. They are very accurate when done by a professional. I had high lead and aluminium levels in the tips of my hair, but little or no trace in the root end of the hair. This is due to the chelation that I have done, the hair is where the body dumps a lot of unwanted metals.
My friend suggested that I cut off and dispose of the contaminated hair, then do another hair analysis in 6 months time.