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Related Experiment Videos

A microtiter solid phase radioimmunoassay for total serum IgE

N K Cheung, M J Reid, A R Page

    Annals of Allergy
    |March 1, 1981
    PubMed
    Summary

    A novel radioimmunoassay accurately measures total serum immunoglobulin E (IgE) levels. This method offers a specific, sensitive, and economical alternative for quantifying IgE in clinical diagnostics.

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    Area of Science:

    • Immunology
    • Biochemistry
    • Assay Development

    Background:

    • Immunoglobulin E (IgE) plays a crucial role in allergic reactions and parasitic infections.
    • Accurate quantification of total serum IgE is essential for diagnosing and monitoring various immunological conditions.

    Purpose of the Study:

    • To develop and validate a novel two-step microtiter solid phase radioimmunoassay (MSPRIA) for the accurate quantification of total serum IgE.

    Main Methods:

    • Microtiter wells were coated with rabbit antihuman IgE antibodies.
    • Serum samples or standards were incubated to bind IgE.
    • Radiolabeled goat anti-IgE antibodies were used for detection, with bound radioactivity proportional to IgE concentration.

    Main Results:

    • The assay demonstrated a mean IgE level of 0.3 U/ml in 25 cord sera.
    • Total serum IgE levels in 40 volunteers ranged from 4 to 593 U/cc.
    • Results showed high agreement with a commercial PRIST assay (correlation coefficient of 0.98).

    Conclusions:

    • The developed MSPRIA is a specific, sensitive, convenient, and economical method for quantifying total serum IgE.
    • This assay provides a reliable tool for clinical diagnostics and immunological research.
    • The MSPRIA offers a valuable alternative to existing IgE quantification methods.

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