Audit of Finn Chamber® patch test preparation
- 1 December 2002
- journal article
- research article
- Published by Wiley in Contact Dermatitis
- Vol. 47 (6), 334-336
- https://doi.org/10.1034/j.1600-0536.2002.470603.x
Abstract
Reproducibility of patch test reactions is an important aspect of patch testing. Thin layer rapid use epicutaneous tests (TRUE TestTM) are preloaded with allergen, whereas Finn Chambers® are empty discs that have allergen applied from a syringe. The amount of allergen applied to each Finn Chamber® is therefore potentially variable depending on technique. This may increase the risk of non‐reproducibility of reactions. We have performed an audit of patch test preparation in our department looking at weight variation of both individual Finn Chambers® and 3 completed panels before and after allergen application. We found that the variance in weight was not significant for 2 of the 3 panels and single Finn Chambers® with allergen in petrolatum. The variance in weight was significant for single Finn Chambers® with allergen in solution and the third panel, which contains an allergen in solution. The clinical significance of these results is unclear.Keywords
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