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Related Experiment Video

Updated: Mar 7, 2026

Precision Implementation of Minimal Erythema Dose MED Testing to Assess Individual Variation in Human Inflammatory Response
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Evaluation of the Antigen-impregnated Discs For Patch Tests.

J S Pasricha, N S Singh

    Indian Journal of Dermatology, Venereology and Leprology
    |February 15, 2017
    PubMed
    Summary

    Antigen-impregnated discs (AIDs) offer a standardized and easier method for patch testing. These AIDs demonstrated stability for at least one year, even at high temperatures, proving reliable for allergy diagnostics.

    Area of Science:

    • Allergy and Immunology
    • Dermatology
    • Contact Dermatitis Research

    Background:

    • Standard patch testing relies on precise antigen quantities, which can be challenging to achieve.
    • Antigen-impregnated discs (AIDs) were developed to simplify and standardize antigen application in patch tests.

    Purpose of the Study:

    • To evaluate the efficacy and standardization of antigen-impregnated discs (AIDs) compared to traditional patch test antigens.
    • To assess the stability of AIDs under various climatic conditions for reliable allergy diagnostics.

    Main Methods:

    • 800 patch tests were conducted using AIDs for various allergens (e.g., Parthenium hysterophorus, nickel sulfate) and compared with standard antigen tests.
    • AIDs for specific allergens were stored at room temperature, 10°C, and 42°C for a year to assess stability.

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    Main Results:

    • AIDs showed comparable results to standard antigens in 780 out of 800 tests, indicating high concordance.
    • AIDs demonstrated excellent stability for at least one year at room temperature, even with temperatures reaching 42°C, with fewer false negatives than standard antigens.

    Conclusions:

    • Antigen-impregnated discs (AIDs) provide a reliable, standardized, and user-friendly alternative for patch testing.
    • AIDs are stable under diverse environmental conditions, making them suitable for widespread clinical use in allergy testing.