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Related Experiment Videos

How reliable are commercial allergy tests?

T J Sethi, M H Lessof, D M Kemeny

    Lancet (London, England)
    |January 10, 1987
    PubMed
    Summary

    Commercial allergy testing laboratories failed to accurately diagnose fish allergy in subjects. The study found these labs provided inconsistent results and frequently misidentified allergies, even in non-allergic individuals.

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    Area of Science:

    • Clinical immunology
    • Diagnostic pathology
    • Food allergy research

    Background:

    • Accurate diagnosis of allergic diseases is crucial for effective patient management.
    • Commercial laboratories offer diagnostic testing services for allergies.
    • Previous studies have highlighted variability in allergy diagnostic methods.

    Purpose of the Study:

    • To evaluate the diagnostic accuracy of commercial laboratories for fish allergy.
    • To assess the reliability and consistency of allergy testing services.
    • To identify potential shortcomings in current commercial allergy diagnostic protocols.

    Main Methods:

    • Recruitment of 9 fish-allergic and 9 control subjects.
    • Collection of blood and hair specimens for laboratory analysis.

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  • Submission of coded, duplicate samples to five commercial allergy testing laboratories.

    • Main Results:

    • All five laboratories failed to correctly diagnose fish allergy.
    • Laboratories reported numerous false-positive allergy diagnoses in control subjects.
    • Inconsistent results were observed for duplicate samples from the same individual.

    Conclusions:

    • Current commercial allergy diagnostic services demonstrate significant limitations in accuracy and reliability.
    • There is a critical need for improved standardization and validation of commercial allergy testing.
    • The findings raise concerns about the clinical utility of commercial allergy tests for diagnosing specific food allergies.