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Interference studies: focus on blood cell lysates preparation and testing.

Giuseppe Lippi1

  • 1U.O. Diagnostica Ematochimica, Dipartimento di Patologia e Medicina di Laboratorio, Azienda Ospedaliero-Universitaria di Parma, Italy. glippi@ao.pr.it

Clinical Laboratory
|May 16, 2012
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Summary

Hemolyzed specimens challenge clinical labs. Standardizing methods to create hemolysates is crucial for reliable interference studies and accurate patient test results.

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Area of Science:

  • Clinical Chemistry
  • Preanalytical Variables
  • Laboratory Medicine

Background:

  • Hemolyzed specimens are a frequent preanalytical issue in clinical laboratories.
  • Intracellular components in hemolyzed samples can affect test reliability.
  • Establishing hemolysis interference limits is critical for accurate diagnostics.

Purpose of the Study:

  • To review scientific literature on blood cell lysis methods.
  • To examine the application of these methods in interference studies.

Main Methods:

  • Literature review of blood cell lysis techniques.
  • Analysis of methods for generating hemolysates for interference testing.

Main Results:

  • Multiple methods exist for producing hemolysates (e.g., freeze-thaw, water lysis, sonication).
  • Various approaches are used to test for interference from hemolysates.

Conclusions:

  • Standardization of hemolysate generation methods is needed for comparable studies.
  • Methods lysing leukocytes and platelets, not just erythrocytes, are preferred for realistic interference assessment.