As a tool for experimental research, hair palysis may have potential. Collection of hair is simple, noninvasive, painless, and doesn't require any special equipment. It can also be stored easily. However, none of these potential advantages are useful unless there is research which supports its use in medical diagnosis. Hair analysis has been useful in identifying people who have been exposed to toxic metals.
More research is needed.
Currently, hair analysis is not the method of choice in identifying exposure to toxic metals. The major pitfall continues to be the lack of connection between body levels of a mineral and its concentration in hair. One should not assume that just because hair analysis is available, advertised, or even prescribed, that it is valid. If someone uses such tests for recommending vitamin and mineral supplements or as a cure-all for health problems, quackery may be involved. The University of Nevada employs only United States citizens and those aliens lawfully authorized to work in the United States.