ISSN 2398-2985      

Blood biochemistry: urea

6guinea pig
Contributor(s):

Vetstream Ltd

Molly Varga

Synonym(s): Blood urea nitrogen, BUN


Overview

  • Produced in liver from ammonia derived from tissue/dietary protein and excreted by kidneys.
  • Important marker of kidney function, protein metabolism and upper gastrointestinal tract hemorrhage.

Sampling

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Tests

Methodologies

  • Typically measured as (total) blood urea nitrogen (BUN).
  • Blood strips can be used to get a rapid results; they do not give precise readings but will show if levels are significantly elevated.
  • Chromatographic assays are most accurate: picric acid based tests overestimate values.

Availability

  • Widely available.

Technique (intrinsic) limitations

  • Only significant in conjunction with other laboratory and clinical findings.

Most useful to assess in conjunction with a urine specific gravity.

Result Data

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Further Reading

Publications

Refereed papers

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