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Microfluidics in Assessing Platelet Function
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[Comparison of testing methods for reticulated platelets].

Yao-ling Luo1, Jing-ping Zhang, Miao-huan Kuang

  • 1Department of Clinical Laboratory, Sun Yat-sen University Cancer Center, Guangzhou, China.

Zhonghua Yi Xue Za Zhi
|January 19, 2013
PubMed
Summary
This summary is machine-generated.

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The Sysmex XE-5000 analyzer offers more accurate and stable detection of reticulated platelets compared to flow cytometry. This automated method is recommended for clinical laboratories due to its reliability and ease of use.

Area of Science:

  • Hematology
  • Clinical Laboratory Science
  • Diagnostic Technology

Background:

  • Accurate enumeration of reticulated platelets is crucial for diagnosing and monitoring various hematological conditions.
  • Existing methods for reticulated platelet detection present varying levels of accuracy, stability, and potential for cross-contamination.
  • Establishing reliable local reference ranges is essential for accurate clinical interpretation.

Purpose of the Study:

  • To compare the accuracy, stability, and sample cross-contamination of two distinct methods for reticulated platelet percentage detection.
  • To establish a local normal reference range for reticulated platelets.
  • To provide methodological recommendations for clinical laboratory practice.

Main Methods:

  • Peripheral blood samples from healthy individuals were analyzed using the Sysmex XE-5000 analyzer (polymethyl oxazine staining) and a flow cytometer (thiazole orange staining).

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  • Spearman's nonparametric correlation was used to analyze the relationship between the two methods.
  • Stability was assessed by repeated measurements over time, and accuracy and cross-contamination were evaluated routinely.

    • Main Results:

    • The Sysmex XE-5000 exhibited a lower coefficient of variation (16.2%) compared to flow cytometry (35.1%).
    • Both methods showed similar sample cross-contamination rates (around 5%).
    • The Sysmex XE-5000 provided stable results within 4 hours post-sampling, while flow cytometry data fluctuated.
    • A significant correlation (P < 0.01, r(2) = 0.923) was observed between the methods.
    • Local normal reference ranges were established: 1.0%-7.5% for Sysmex XE-5000 and 3.0%-10.5% for flow cytometry.

    Conclusions:

    • The fully automated Sysmex XE-5000 analyzer is superior to flow cytometry for reticulated platelet detection due to its operational simplicity and data stability.
    • The Sysmex XE-5000 is recommended as the preferred method for clinical laboratories assessing reticulated platelet percentages.