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Preanalytical conditions for multiparameter platelet flow cytometry.

Matthew S Hindle1,2, Lih T Cheah1, Daisie M Yates1

  • 1Discovery and Translational Science Department, Leeds Institute of Cardiovascular & Metabolic Medicine, University of Leeds, UK.

Research and Practice in Thrombosis and Haemostasis
|October 19, 2023
PubMed
Summary
This summary is machine-generated.

Optimizing preanalytical conditions for flow cytometry is crucial for accurate blood platelet analysis. Proper sample handling ensures reliable measurement of platelet activation markers and improves data quality.

Keywords:
anticoagulantsblood plateletscytofluorometryflowflow cytometryplatelet activationplatelet function tests

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Area of Science:

  • Hematology
  • Immunology
  • Biotechnology

Background:

  • Flow cytometry is essential for studying blood platelet biology.
  • Preanalytical conditions, sample processing, and data analysis significantly impact flow cytometry results.
  • Optimal conditions are vital for robust and reproducible platelet function data, yet often poorly described.

Purpose of the Study:

  • To investigate the impact of preanalytical variables on multiparameter fluorescent flow cytometry of blood platelets.
  • To characterize how anticoagulant choice, sample type, processing, and storage affect platelet activation marker analysis.

Main Methods:

  • Assessed effects of anticoagulant, sample material, processing, and storage time.
  • Evaluated four common platelet activation markers: fibrinogen binding, CD62P, CD42b expression, and phosphatidylserine exposure.
  • Utilized multiparameter fluorescent flow cytometry for platelet analysis.

Main Results:

  • Suboptimal preanalytical conditions increased basal platelet activity and decreased sensitivity to stimulation.
  • Optimal conditions prevented artifactual platelet stimulation, preserving basal activity and activation sensitivity.
  • Identified specific preanalytical parameters influencing platelet activation marker detection.

Conclusions:

  • Optimal preanalytical conditions are key for accurate measurement of platelet phenotype via flow cytometry.
  • Established optimal conditions provide a framework for developing high-quality multiparameter platelet assays.
  • This research supports the generation of reliable data for advanced platelet analysis.