Note that some links will break as pages are moved, websites are abandoned, etc.
If this happens, please try searching for the page in the Wayback Machine at www.archive.org.
Read the original article
A hair sample of a single donor was sent to six different laboratories for hair mineral analysis. Laboratory designations of normal reference ranges varied greatly, resulting in conflicting classifications (high, normal or low) of nearly all minerals analysed. Laboratories also provided conflicting dietary and nutritional supplement recommendations based on their results. Concludes that hair analysis is not reliable. The Journal of the American Medical Association (January 2001)