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Related Experiment Videos

The Coulter Counter leukocyte differential.

A Richardson-Jones, R Hellman, D Twedt

    Blood Cells
    |January 1, 1985
    PubMed
    Summary
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    The Coulter Counter S-PLUS IV offers precise and accurate leukocyte differential counting, matching microscope sensitivity. This automated method provides reproducible results compared to traditional stained-film analysis.

    Area of Science:

    • Hematology
    • Clinical Pathology
    • Medical Laboratory Technology

    Background:

    • Automated blood cell counters are crucial for routine hematological analysis.
    • The Coulter Counter S-PLUS IV is a specific instrument for leukocyte differential counting.
    • Evaluating new technologies against established methods is essential for clinical adoption.

    Purpose of the Study:

    • To assess the precision, accuracy, and clinical sensitivity of the Coulter Counter S-PLUS IV for leukocyte differential counting.
    • To compare the performance of the Coulter Counter S-PLUS IV against the standard stained-film reference method.
    • To determine the clinical utility of the automated system for hematological diagnostics.

    Main Methods:

    • Evaluation followed NCCLS (National Committee for Clinical Laboratory Standards) tentative standard H20-T where applicable.

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  • Precision and accuracy were assessed using established laboratory protocols.
  • Clinical sensitivity was compared to a manual, four-slide microscope differential count.

    • Main Results:

    • The Coulter Counter S-PLUS IV demonstrated superior reproducibility compared to the stained-film method.
    • The instrument's accuracy was found to be at least equivalent to the reference method.
    • Clinical sensitivity of the automated system was comparable to manual microscopic analysis.
    • Reference ranges generated by the instrument aligned with those from the stained-film method.

    Conclusions:

    • The Coulter Counter S-PLUS IV is a reliable tool for leukocyte differential counting, offering enhanced reproducibility.
    • The automated system provides accurate and clinically sensitive results, suitable for routine laboratory use.
    • This technology presents a viable alternative to manual differential counts, improving laboratory efficiency.