During the study period, 36 metals were included in the metal series (Table 1). Some of these allergens were the same metal in different concentrations or forms. The metal series has evolved over ...

beryllium sulfate tetrahydrate 1% aqueous, nickel sulfate hexahydrate 2.5%, cobalt sulfate 1%, and gold chloride 0.5% in alcohol. These late readings increased our detection rate for allergic ...