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The preanalytic phase in veterinary clinical pathology.

Jean-Pierre Braun1, Nathalie Bourgès-Abella, Anne Geffré

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Preanalytic variability significantly impacts laboratory results, leading to potential errors in clinical pathology. Optimizing specimen collection and handling is crucial for accurate diagnostics and improved patient care.

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Area of Science:

  • Clinical Pathology
  • Laboratory Medicine
  • Veterinary Diagnostics

Background:

  • The preanalytic phase, encompassing specimen collection to analysis, is prone to numerous errors in both human and veterinary clinical pathology.
  • Factors influencing preanalytic variability include technical aspects (anticoagulant choice, vessel selection, handling) and uncontrollable biologic/physiologic elements (feeding, stress, rhythms).

Purpose of the Study:

  • To highlight the general causes of preanalytic variability in laboratory testing.
  • To emphasize the critical need for improved attention and care during the preanalytic phase.
  • To underscore the impact of preanalytic quality on diagnostic validity and clinical decision-making.

Main Methods:

  • Review of general causes of preanalytic variability.
  • Presentation of examples illustrating the impact of preanalytic factors.
  • Discussion of controllable and uncontrollable factors affecting specimen quality.

Main Results:

  • The preanalytic phase is a major source of laboratory errors.
  • Technical and biologic factors significantly affect result validity.
  • Documentation of influencing factors, even if uncontrollable, is recommended.

Conclusions:

  • Enhanced attention to the preanalytic phase is essential for improving laboratory result accuracy.
  • Optimizing specimen quality directly enhances the validity of diagnostic results.
  • Improved preanalytic care can lead to better clinical decision-making and patient management.