Patch testing is the standard procedure to detect contact sensitivity. The most frequent contact allergens are included in the standard series. We report on current trends regarding results obtained with the standard series from 2001-2004 in Germany, Austria (Graz, Vienna) and Switzerland (Basel). This analysis includes the frequency of the most common contact allergens and other aspects such as age and gender distribution and parameters of diagnostic quality such as reaction index and positivity ratio. Information on the most common contact allergens is updated.
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Worm et al. (2005) studied this question.
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