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The laboratory evaluation of platelet dysfunction.

Ellinor I B Peerschke1

  • 1Department of Pathology, New York Presbyterian Hospital, Weill Medical College, Cornell University, 525 East 68th Street, Room F 715, New York, NY 10021, USA. epeersch@med.cornell.edu

Clinics in Laboratory Medicine
|July 24, 2002
PubMed
Summary

Current platelet function tests may miss defects. A new algorithm integrates bleeding history, specific assays, and advanced techniques like FACS analysis to improve diagnosis of platelet disorders.

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Area of Science:

  • Hematology
  • Clinical Pathology
  • Biochemistry

Background:

  • Current clinical testing strategies for platelet function defects may be inadequate.
  • Advances in understanding platelet biochemistry and molecular mechanisms necessitate improved diagnostic approaches.

Purpose of the Study:

  • To present an algorithm for enhanced platelet function testing.
  • To integrate clinical bleeding history with advanced diagnostic assays for improved accuracy.

Main Methods:

  • Algorithm development incorporating clinical bleeding history.
  • Utilizing a wider repertoire of platelet agonists (ADP, thrombin, collagen).
  • Employing Fluorescence-Activated Cell Sorting (FACS) analysis for surface glycoprotein expression.
  • Incorporating screening tests under physiologic and pathologic flow conditions.

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Main Results:

  • The proposed algorithm integrates screening and specific diagnostic assays.
  • Advanced methods like FACS analysis offer quantitative insights into platelet membrane function.
  • Flow condition testing may reveal abnormalities missed by standard aggregation studies.

Conclusions:

  • Refined understanding of platelet function requires more sophisticated testing algorithms.
  • Advanced techniques and flow-based assays show promise in identifying platelet function defects.
  • Further research is needed to determine if these enhanced tests predict clinical bleeding or thrombotic risk.