ISSN 2398-2950      

Hematology: leucocyte (WBC)

ffelis

Synonym(s): WBC


Overview

Sampling

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Tests

Methodologies

  • Manual hemocytometer - accuracy +/- 20-25%.
  • Electronic counting systems - accuracy +/- 3-5% (intralaboratory precision) or 10-15% (interlaboratory precision).
  • QBC-V hematology system.
  • Automated differentials provide useful information but are not an alternative to blood smear evaluation.

Availability

  • All commercial laboratories and selected practices.

Validity

Sensitivity

  • Sensitive.

Specificity

  • Non-specific.

Predictive value

  • Useful if used in conjunction with differential white blood cell counts.

Technique (intrinsic) limitations

  • Leucocyte counts cannot provide a specific diagnosis in isolation.

Technician (extrinsic) limitations

  • Repeatability.
  • Level of skill.

Result Data

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Further Reading

Publications

Refereed papers

Other sources of information

  • Cowell R L, Tyler R D & Meinkoth J H (1999) Diagnostic Cytology and Hematology of the Dog and Cat. 2nd edn. Mosby, USA.
  • Duncan J R, Prasse K W & Mahaffy E A (1994) Veterinary Laboratory Medicine Clinical Pathology.3rd edn. Iowa University Press, USA.
  • Jain N C (1993) Essentials of Veterinary Hematology. Lea & Febiger, USA.

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