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To the Editor.—
The gold leaf employed to patch test the patient who had "gold vasculitis" was obtained from M. Swift & Sons, Inc, 10 Love Lane, Hartford, CT 06101. The company informs us that the gold used in the gold leaf is .9998% pure. If there is trace contamination, it would be with silver, lead, or iron. When the company processes this gold bullion, it uses 10 parts of silver per 500 parts of gold and 8 parts of copper per 500 parts of gold. Neutron activation analysis was not performed.The patient was tested for copper sensitivity, which was negative, but was not tested for silver sensitivity.I am not sure of the relevance of the statement about the possibility of surface contamination of the gold leaf with organic or inorganic allergens. Routine patch testing procedures limit the amount of contamination if proper precautions are taken. If there
Roenigk HH, Taylor JS. Gold Vasculitis-Reply. Arch Dermatol. 1974;110(2):297. doi:10.1001/archderm.1974.01630080085034
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