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A comparison study between two analyzers for determining serum ferritin.

Xiaolian Zhang, Yu Lu, Liping Ma

    Clinical Laboratory
    |March 27, 2015
    PubMed
    Summary
    This summary is machine-generated.

    Two automated immunoassays for serum ferritin (SF) showed good correlation but were not interchangeable. Consistent use of the same SF measurement method is crucial for accurate patient monitoring and reporting.

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    Area of Science:

    • Clinical Chemistry
    • Immunoassay Technology
    • Biomarker Analysis

    Background:

    • Serum ferritin (SF) is a key indicator of in vivo iron status.
    • Accurate SF measurement is essential for clinical diagnostics.
    • Evaluation of automated immunoassays is critical for reliable results.

    Purpose of the Study:

    • To assess the analytical performance of two automated immunoassays for serum ferritin.
    • To compare SF measurements between the Abbott Architect i2000 and Roche Cobas E601 systems.
    • To determine the interchangeability of the two evaluated immunoassay methods.

    Main Methods:

    • Analyzed 125 clinical samples across a wide concentration range.
    • Utilized Abbott Architect i2000 and Roche Cobas E601 automated immunoassay systems.
    • Performed comparative analysis of SF results using correlation and Bland-Altman methods.

    Main Results:

    • Both systems demonstrated good analytical performance and accuracy.
    • A high correlation (r = 0.99) was observed between the two methods.
    • Cobas E601 reported SF values higher than Architect i2000 (mean difference 60.6 ng/mL) with wide limits of agreement.

    Conclusions:

    • The evaluated serum ferritin immunoassays are highly correlated but not interchangeable.
    • Consistent use of a single assay method is recommended for patient monitoring.
    • Method-specific reporting of serum ferritin results is advised to ensure accurate interpretation.