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Related Experiment Videos

Histamine-dependent allergy blood test. Clinical evaluation.

B A Faraj, V M Camp, P Lolies

    Allergy
    |September 1, 1986
    PubMed
    Summary

    Measuring histamine release from leukocytes after allergen exposure is a reliable in vitro diagnostic test for atopic allergy. This method accurately identifies allergic responses in patients, correlating well with skin testing.

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    Area of Science:

    • Immunology
    • Allergy Diagnostics

    Background:

    • Allergen-mediated histamine release from human leukocytes is a key in vitro model for allergic reactions.
    • Accurate diagnosis of atopic allergy is crucial for effective patient management.

    Purpose of the Study:

    • To evaluate the reliability of measuring histamine release via radioenzymatic assay as a diagnostic index for atopic allergy.
    • To assess the correlation between histamine release and established allergy diagnostic methods.

    Main Methods:

    • A study group of 150 patients with suspected atopic allergy was analyzed.
    • Blood samples were challenged with three categories of common allergens: dust/mites, dander, and pollens.
    • Histamine release was quantified using radioenzymatic assay and compared with clinical history and intradermal skin testing.

    Main Results:

    • Significant histamine release (4-65% of total histamine) was observed in 96% of patients with skin test sensitivity (≥3+).
    • A strong correlation was found between skin test results and the specific allergens triggering histamine release.
    • The radioenzymatic assay demonstrated high sensitivity in detecting allergen-specific histamine release.

    Conclusions:

    • Measurement of histamine release from leukocytes following in vitro allergen challenge is a clinically useful diagnostic tool for atopic disease.
    • This radioenzymatic assay provides a reliable in vitro alternative or adjunct to traditional allergy testing methods.
    • The findings support the use of histamine release assays for diagnosing and characterizing allergic conditions.

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