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Related Experiment Videos

An automated reticulocyte counting method: preliminary observations.

N Tatsumi, I Tsuda, K Kojima

    Medical Laboratory Sciences
    |April 1, 1989
    PubMed
    Summary
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    A new automated flow cytometer accurately counts reticulocytes in peripheral blood within 60 seconds. This rapid method shows high reproducibility and good correlation with manual counts, offering precise results.

    Area of Science:

    • Hematology
    • Clinical Pathology
    • Biomedical Engineering

    Background:

    • Reticulocyte counts are crucial for assessing bone marrow erythropoiesis.
    • Current manual methods can be time-consuming and subjective.
    • Need for rapid, automated, and reliable reticulocyte counting techniques.

    Purpose of the Study:

    • To evaluate a novel automated flow cytometer for peripheral blood reticulocyte counting.
    • To assess the accuracy, precision, and speed of the new automated counter.
    • To compare automated counts with traditional manual methods.

    Main Methods:

    • Utilized a newly developed flow cytometer for automated reticulocyte counting.
    • Employed auramine-O staining within the instrument.
    • Performed within-run reproducibility tests (n=50) and blood dilution linearity studies.

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  • Correlated automated counts with manual reticulocyte counts.

    • Main Results:

    • The automated counter provided results within 60 seconds per test.
    • Mean within-run reproducibility was 4.66% (CV).
    • Blood dilution showed high linearity (r=0.996).
    • Good correlation was observed between automated and manual counts (r=0.893).
    • High cell counts (leukocytes, erythrocytes, platelets) did not interfere with accuracy.

    Conclusions:

    • The new automated flow cytometer offers a rapid and accurate method for reticulocyte counting.
    • The system demonstrates excellent precision and linearity.
    • It provides reliable data comparable to manual methods, unaffected by common blood cell interferences.