title: How to use the reaction index and positivity ratio.
authors.forename: Jochen
authors.initials: J
authors.lastname: Brasch
authors.forename: Johannes
authors.initials: J
authors.lastname: Geier
mesh_terms: D000485:Allergens / Q000009:adverse effects; D017449:Dermatitis, Allergic Contact / Q000175:diagnosis*; D017453:Dermatitis, Irritant / Q000175:diagnosis; D005189:False Positive Reactions; D006801:Humans; D010328:Patch Tests / Q000379:methods / Q000592:standards*; D011237:Predictive Value of Tests; D012015:Reference Standards
chemical_list: D000485:Allergens