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Patch testing with amalgam at various concentrations
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27 patients with positive D3 reactions on patch testing to 3 mercury screening allergens were patch listed with 13 mercury patch test preparations, 6 inorganic and 7 organic, and amalgam 20% pet. The 13 patients (all women) showing positive reactions to 20% amalgam were then patch tested to reducing concentrations. 2 patients reacted down to 1% 4 down to 2%, 4 down to 5%, 2 down to 10% and I only to 20%, a total of 10 of the 13 patients therefore reading to the 5% concentration of amalgam. The appropriate patch test concentration of amalgam is discussed and the clinical significance and female preponderance of amalgam reactivity suggested as being worthy of further investigation,
Title: Patch testing with amalgam at various concentrations
Description:
27 patients with positive D3 reactions on patch testing to 3 mercury screening allergens were patch listed with 13 mercury patch test preparations, 6 inorganic and 7 organic, and amalgam 20% pet.
The 13 patients (all women) showing positive reactions to 20% amalgam were then patch tested to reducing concentrations.
2 patients reacted down to 1% 4 down to 2%, 4 down to 5%, 2 down to 10% and I only to 20%, a total of 10 of the 13 patients therefore reading to the 5% concentration of amalgam.
The appropriate patch test concentration of amalgam is discussed and the clinical significance and female preponderance of amalgam reactivity suggested as being worthy of further investigation,.
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