Test patch and its use for demonstrating contact allergy

摘要

##STR1## Occlusive epicutaneous testing strip and method for demonstrating whether or not an individual suffers from contact allergy to a test substance. The test strip has at least one patch on which the test substance is incorporated in a vehicle formulated as a film which adheres to the patch and contains at least one film-forming polymer capable of absorbing moisture which when the strip is being used is secreted from the skin area tested. The characteristic feature of the strip is that on at least one of the patches on which said vehicle is formulated as a film the said polymer has the structure (I), where n is the number of times that the structure within brackets is repeated and may be ≧100, and A is a straight or branched alkylene group having a length of 3-5 carbon atoms.