title: Comparative study of IQ-ultra and Finn Chambers test methodologies in detecting 10 common standard allergens that cause allergic contact dermatitis.
abstract: BACKGROUND
  Patch testing is routinely used in contact dermatitis clinics because it is the gold standard for the evaluation of potential allergic contact dermatitis.
  
  
  OBJECTIVE
  The study was undertaken to evaluate possible differences in reactivity between the Finn Chamber and IQ-Ultra patch-testing methodologies.
  
  
  METHODS
  Patients were patch-tested simultaneously with the Finn Chamber and IQ-Ultra patch tests. Ten standard allergens set by the North American Contact Dermatitis Group were used for both techniques.
  
  
  RESULTS
  Both patch tests had a significant agreement in detecting all of the allergens. An "almost perfect agreement" was noted for ethylenediamine dihydrochloride, quaternium-15, mercapto mix, black rubber mix, balsam of Peru, and nickel sulfate; "substantial agreement" for formaldehyde, bisphenol A epoxy resin, and 4-tert-butylphenol formaldehyde resin; and "moderate agreement" for potassium dichromate.
  
  
  CONCLUSIONS
  The Finn Chamber and IQ-Ultra patch tests had a good agreement in the detection of the 10 standard allergens that were tested.
authors.affiliation: mit@gmail.comUniversity of Ottawa, Ottawa, Canada. joseph.doumit@gmail.com
authors.forename: Joseph
authors.initials: J
authors.lastname: Doumit
authors.forename: Melanie
authors.initials: M
authors.lastname: Pratt
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000485:Allergens; D017449:Dermatitis, Allergic Contact / Q000276:immunology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010328:Patch Tests / Q000379:methods*; D055815:Young Adult
chemical_list: D000485:Allergens