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Related Experiment Videos

European multicenter study of TRUE Test, Panel 2.

J D Wilkinson1, D P Bruynzeel, G Ducombs

  • 1Department of Occupational Dermatology, Free University Academic Hospital, Amsterdam, The Netherlands.

Contact Dermatitis
|April 1, 1990
PubMed
Summary

The TRUE Test, a ready-to-apply patch test for contact dermatitis, showed good concordance with traditional methods. Most positive reactions correlated with patient history, indicating its clinical relevance in diagnosing skin allergies.

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Area of Science:

  • Dermatology
  • Allergology
  • Contact Dermatitis Research

Background:

  • Contact dermatitis is a common skin condition.
  • Accurate diagnosis relies on patch testing.
  • Standardized, easy-to-use patch tests are needed.

Purpose of the Study:

  • To evaluate the efficacy of the TRUE Test, Panel 2.
  • To compare its performance against traditional patch testing methods.
  • To assess the clinical relevance of positive patch test reactions.

Main Methods:

  • 808 patients with suspected contact dermatitis were tested.
  • TRUE Test, Panel 2 was applied symmetrically to the back.
  • Results were compared with allergens in Finn Chambers.
  • Evaluations were conducted at 72 or 96 hours.

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Main Results:

  • All 11 allergens elicited positive reactions in the patient group.
  • Concordance between TRUE Test and Finn Chambers was 63%.
  • 17% of positive reactions were unique to TRUE Test, 20% to Finn Chambers.
  • Approximately 75% of positive reactions were supported by patient history.

Conclusions:

  • The TRUE Test, Panel 2 demonstrates good concordance with standard patch testing.
  • The test is a reliable tool for diagnosing contact dermatitis.
  • Positive reactions generally correlate with clinical history, enhancing diagnostic value.