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Microfluidic lysis of human blood for leukocyte analysis using single cell impedance cytometry

  • Xiaojun Han
  • , Cees Van Berkel
  • , James Gwyer
  • , Lorenzo Capretto
  • , Hywel Morgan*
  • *Corresponding author for this work
  • University of Southampton
  • Koninklijke Philips N.V.

Research output: Contribution to journalArticlepeer-review

Abstract

This paper demonstrates an integrated microfluidic system that performs a full blood count using impedance analysis. A microfluidic network design for red blood cell (RBC) lysis is presented, and the diffusive mixing processes are analyzed using experimental and simulated results. Healthy and clinical bloods analyzed with this system, and the data shows good correlation against data obtained from commercial hematology machines. The data from the microfluidic system was compared against hospital data for 18 clinical samples, giving R 2 (coefficient of determination) values of 0.99 for lymphocytes, 0.89 for monocytes, and 0.99 for granulocytes in terms of relative counts and 0.94 for lymphocytes, 0.91 for monocytes, and 0.95 for granulocytes in terms of absolute counts. This demonstrates the potential clinical utility of this new system for a point-of-care purpose.

Original languageEnglish
Pages (from-to)1070-1075
Number of pages6
JournalAnalytical Chemistry
Volume84
Issue number2
DOIs
StatePublished - 17 Jan 2012
Externally publishedYes

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