Skin tests in which the sensitizer is applied to a patch of cotton cloth or gauze held in place for approximately 48-72 hours. It is used for the elicitation of a contact hypersensitivity reaction.
Year introduced: 1991(1975)
Subheadings
Tree Number(s): E01.370.225.812.871.610, E05.200.812.871.610, E05.478.594.890.610
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