title: Comparison between 24- and 48-hour exposure time in patch testing.
abstract: A pilot study was performed to compare the results obtained by leaving the test substances recommended by ICDRG on the backs of the patients for 24 and 48 h, respectively. The Pirilä chamber test method was used. We got different results between the two methods of application time as reported, and intend to continue the study.
mesh_terms: D006801:Humans; D010328:Patch Tests / Q000379:methods*; D012882:Skin Tests / Q000379:methods*; D013997:Time Factors