ISSN 2398-2950      

Blood biochemistry: total bilirubin

ffelis
Contributor(s):

Kathleen P Freeman

Synonym(s): Direct and indirect bilirubin conjugated and unconjugated bilirubin


Overview

  • Peripheral breakdown of red blood cells and myoglobin   →   unconjugated (indirect) bilirubin   →   bound to albumin   →   transported to liver   →   conjugated with glucuronic acid   →   excreted in bile.
  • Jaundice, with an increase in total bilirubin, may be primarily due to an increase in direct, or indirect bilirubin or both.

Sampling

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Tests

Methodologies

  • Van den Bergh method.
  • Measure [total bilirubin] minus [direct bilirubin] = [indirect bilirubin].

Availability

  • Routine test.

Technique (intrinsic) limitations

  • Interpret results in conjunction with other laboratory results.

Technician (extrinsic) limitations

  • Routine test.

Result Data

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Further Reading

Publications

Refereed papers

Other sources of information

  • Ettinger S J & Feldman E C (2000) Eds. Textbook of Veterinary Internal Medicine. 5th edn. W B Saunders & Co, USA.
  • Kaneko J J, Harvey J W & Brass M L (eds) (1997) Clinical Biochemistry of Domestic Animals. 5th edn. Academic Press, USA.
  • Duncan J R, Prasse K W & Mahaffey E A (1994) Veterinary Laboratory Medicine. Clinical Pathology. 3rd edn. Iowa University Press, USA.

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