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Hair analysis (alternative medicine)
(詳細はhair analysis is the chemical analysis of a hair sample. The use of hair analysis in alternative medicine as a method of investigation to assist is controversial〔〔 and its use in this manner has been opposed repeatedly by the AMA because of its unproven status and its potential for health care fraud.〔
==Background==
In hair analysis the levels of minerals and metals in the hair sample are analyzed.〔I.M. Kempson & E. Lombi, "Hair analysis as a biomonitor for toxicology, disease and health status" Chemical Society Reviews, 2011 .〕 Alternative medicine advocates state that this allows them to diagnose mineral deficiencies, heavy metal poisoning, and that patients afflicted by conditions such as autism have anomalous hair test results.
As of 1998, of the 9 commercial 'nutritional hair analysis' laboratories currently operating in the United States, 3 indicate that they primarily use ICP-MS, 4 primarily use ICP-AES, and 1 reports use of directly coupled plasma (DCP)-AES. DCP-AES is an older technique that is potentially less stable than ICP-AES. On average, these laboratories measure 26 elements per hair sample. Nutritional hair analysis laboratories require between 0.3 and 1 gram for the AES methods, and 0.25-1 gram for ICP-MS."〔Eastern Research Group. ''(Appendix C. )'' SUMMARY REPORT, HAIR ANALYSIS PANEL DISCUSSION: EXPLORING THE STATE OF THE SCIENCE. ATDSR. June 12—13, 2001〕 The amount selected depends on the analytical method used, but sample sizes in the 50 milligram range are reported.〔Eastern Research Group. ''(SECTION 3 )
3.4 Other Methodological Considerations.'' SUMMARY REPORT, HAIR ANALYSIS PANEL DISCUSSION: EXPLORING THE STATE OF THE SCIENCE. ATDSR. June 12—13, 2001〕
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