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Solid-phase enzyme immunoassay for serum ferritin.

S Anaokar, P J Garry, J C Standefer

    Clinical Chemistry
    |August 1, 1979
    PubMed
    Summary
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    A new enzyme immunoassay for serum ferritin offers a sensitive and efficient alternative to radioimmunoassay. This method requires minimal serum and provides rapid, reliable results for ferritin measurement.

    Area of Science:

    • Clinical Chemistry
    • Immunology
    • Biochemistry

    Background:

    • Ferritin is a key protein for iron storage, and its serum levels are important clinical markers.
    • Existing methods for serum ferritin measurement, such as radioimmunoassay, can be time-consuming and labor-intensive.

    Purpose of the Study:

    • To develop and describe a novel solid-phase enzyme immunoassay for the quantification of ferritin in human serum.
    • To establish a sensitive, efficient, and reliable alternative to current serum ferritin assays.

    Main Methods:

    • A solid-phase enzyme immunoassay was developed using a horseradish peroxidase-labeled antibody.
    • A highly sensitive chromogen, 2,2'-azino-di(3-ethyl-benzthiazoline-6-sulfonate), was employed for signal detection.
    • The assay was optimized for minimal serum volume (10 microL).

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    Main Results:

    • The developed enzyme immunoassay demonstrated high sensitivity, capable of measuring as little as 10 pg of ferritin.
    • The assay requires significantly less time and labor compared to existing ferritin assays.
    • The method proved to be a reliable alternative for serum ferritin determination.

    Conclusions:

    • The novel solid-phase enzyme immunoassay provides a sensitive, rapid, and labor-efficient method for serum ferritin measurement.
    • This assay represents a viable and potentially superior alternative to radioimmunoassay for clinical diagnostics.