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Introduction to in vivo allergy testing

J B Anon1

  • 1Department of Otolaryngology, University of Pittsburgh School of Medicine, PA.

Otolaryngology--Head and Neck Surgery : Official Journal of American Academy of Otolaryngology-Head and Neck Surgery
|September 1, 1993
PubMed
Summary

In vivo skin tests assess allergic sensitivity by measuring dermal mast cell reactivity. While scratch, prick, and intradermal tests have pros and cons, sensitivity and reproducibility are key for accurate results.

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Area of Science:

  • Immunology
  • Allergology

Background:

  • In vivo skin tests are crucial for assessing allergic sensitivity.
  • These tests rely on dermal mast cell reactivity and immunoglobulin E sensitization.

Purpose of the Study:

  • To examine the immunology of in vivo skin testing.
  • To explore factors influencing skin test reactivity.
  • To compare the benefits and drawbacks of various skin testing methods.

Main Methods:

  • Review of immunological principles underlying skin testing.
  • Analysis of epicutaneous (scratch, prick) and intradermal (skin end point titration) methods.
  • Discussion of efforts toward standardization of testing technology.

Main Results:

  • All in vivo skin tests share fundamental principles involving mast cell degranulation.
  • Various factors can influence the reactivity and sensitivity of skin tests.
  • Both advantages and disadvantages are associated with each skin testing method.

Conclusions:

  • No single in vivo skin test is universally superior.
  • Sensitivity and reproducibility are the most critical factors for reliable allergic sensitivity assessment.
  • Standardization of skin testing technology remains an important goal.

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