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Dynamic Multiparameter Platelet Function Assessment Using a Capacitive Biosensor
Published on: May 2, 2025
270
Description of an In Vitro Platelet Function Analyzer-PFA-100™.
Sourav K Kundu1, Eric J Heilmann1, Reynaldo Sio1
1Dade International Inc., Miami, Florida.
Seminars in Thrombosis and Hemostasis
|December 12, 2023
Summary
The PFA-100® system offers a new in vitro method for detecting platelet dysfunction. This test quantitatively measures platelet function, providing rapid and accurate results for clinical evaluation.
Area of Science:
- Hematology
- Biomedical Engineering
Background:
- Platelet dysfunction can lead to bleeding disorders.
- Accurate and rapid diagnostic tools for platelet function are needed in clinical settings.
Purpose of the Study:
- To introduce and evaluate the PFA-100® system, a novel in vitro diagnostic device for assessing platelet function.
Main Methods:
- The PFA-100® system utilizes a disposable cartridge with a collagen and epinephrine or adenosine 5'-diphosphate coated membrane.
- Blood is aspirated through a microscopic aperture under standardized high shear conditions.
- Platelet activation, aggregation, and subsequent aperture occlusion are measured to determine closure time.
Main Results:
- Impairment of von Willebrand factor or inhibition of specific platelet receptors (glycoprotein Ib, IIb/IIIa) resulted in abnormal closure times.
- The test demonstrated sensitivity to platelet adherence and aggregation abnormalities.
- An antifibrinogen antibody did not affect closure times, indicating specificity.
Conclusions:
- The PFA-100® system provides a quantitative measure of platelet function in whole blood.
- The system shows potential for routine clinical use due to its accuracy, ease of operation, and rapid results.
- This assay is sensitive to specific platelet defects, aiding in the diagnosis of platelet dysfunction.
