Felis ISSN 2398-2950

Urinalysis: blood

Contributor(s): Kathleen P Freeman, Karen L Gerber

Overview

  • Presence of excessive numbers of red blood cells or quantities of hemoglobin indicate possibly lower urinary tract pathology, kidney disease or hemolytic disease.

Sampling

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Tests

Methodologies

  • Dipstick:
    • Immerse dipstick in urine till wet.
    • Remove and shake off excess urine.
    • Hold horizontally to avoid run-off between pads.
    • Read test at correct time interval.
  • Microscopic:
    • Lower the condenser on the microscope to improve contrast.
    • Systematically examine entire specimen under the lower power objective, assessing quantity and type of sediment.

Availability

  • All veterinary clinics and external laboratories.

Technician (extrinsic) limitations

  • Requires practice to accurately identify erythrocytes and other features of urine sediment.

Result Data

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Further Reading

Publications

Refereed papers

  • Recent references from VetMedResource and PubMed.
  • Brobst D (1989) Urinalysis and associated laboratory procedures. Vet Clin North Am Small Anim Pract 19(5), 929-949.
  • McCaw D L, Fleming E J & Mikiciuk M G (1989) Interpreting the results of urinalysis - a key to diagnosing renal disorders. Vet Med 84(3), 281-286.

Other sources of information

  • Kaneko J J (1997) Clinical Biochemistry of Domestic Animals. 5th edn. Harvey J W & Bruss M L (eds). Academic Press, Boston.
  • Duncan J R, Prasse K W & Mahaffy E A (1994) Veterinary Laboratory Medicine Clinical Pathology. 3rd edn. Iowa University Press, Ames, Iowa.


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