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Related Concept Videos

Structure and Function of Platelets01:18

Structure and Function of Platelets

The cell fragments known as platelets are disc-shaped, with an average diameter of about 3 μm and a thickness of roughly 1 μm. They play a crucial role in the body's vascular clotting system, which also involves plasma proteins, blood cells, and blood vessel tissues.
Platelets are continually replenished, circulating in the bloodstream for 9-12 days before being removed by phagocytes, primarily in the spleen. A microliter of circulating blood contains between 150,000 and 450,000 platelets, with...

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Analyzing Platelet Subpopulations by Multi-color Flow Cytometry
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Do blood collection methods influence whole-blood platelet function analysis?

Marcus D Lancé1, Yvonne M C Henskens, Patty Nelemans

  • 1Department of Anaesthesiology and Pain Treatment, Maastricht University Medical Centre (MUMC) , Maastricht , The Netherlands. marcus.lance@mumc.nl

Platelets
|June 1, 2012
PubMed
Summary
This summary is machine-generated.

Blood collection site and method do not significantly impact platelet function test results from multiple electrode aggregometry (MEA) and PFA-100® assays. Standardized collection is recommended, but various sites are viable for platelet function analysis.

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Area of Science:

  • Clinical Pathology
  • Hematology
  • Laboratory Medicine

Background:

  • Pre-analytical variables can influence standard coagulation tests.
  • The impact of these variables on platelet function analysis is not fully understood.
  • Investigating collection site and puncture method effects on platelet function assays is crucial.

Purpose of the Study:

  • To compare the effects of different blood collection sites and puncture methods on platelet function analysis using multiple electrode aggregometry (MEA) and platelet function analyzer (PFA-100®).
  • To assess contact activation and thrombin generation (TG) in relation to collection methods.
  • To determine the justification of using various blood sampling lines for MEA and PFA-100® assays.

Main Methods:

  • Blood samples were collected from venous, arterial, and central venous lines, as well as by venipuncture from volunteers undergoing elective cardiac surgery.
  • Platelet function was analyzed using MEA (triggered by ADP, ASPI, collagen, ristocetin, TRAP) and PFA-100® (triggered by collagen/epinephrine and collagen/ADP).
  • Thrombin generation (TG) was measured using citrate and Corn Trypsin Inhibitor (CTI) anticoagulants, comparing syringe versus vacuum tube collection.

Main Results:

  • MEA and PFA-100® assays showed good correlation across different collection sites (ICC).
  • CTI demonstrated significantly more effective inhibition of TG compared to citrate.
  • Contact activation was consistently present and independent of the collection method; only the MEA ASPI test showed significant differences between collection methods.

Conclusions:

  • Blood sampling from all tested lines (venous, arterial, central venous, venipuncture) is justified for MEA and PFA-100® assays.
  • Contact activation appears to not significantly influence platelet function test outcomes.
  • While collection methods showed minimal impact, standardization remains advisable for consistency.