Canis ISSN: 2398-2942
Blood biochemistry: ammonia
Synonym(s): NH3
Contributor(s): Kathleen P Freeman, James Simpson
Overview
- Primarily absorbed from GI tract, especially colon. Lower levels from muscle metabolism.
- Increased levels may be seen with impaired liver function or portosystemic shunt.
- Used in investigation of hepatic encephalopathy Hepatic encephalopathy.
Sampling
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Tests
Availability
- Contact commercial laboratory to confirm availability.
- Available with some in-practice analysers.
Technique (intrinsic) limitations
- Only significant in conjunction with other laboratory and clinical findings.
Technician (extrinsic) limitations
Result Data
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Further Reading
Publications
Refereed papers
- Recent references from VetMedResource and PubMed.
- Sterczer A, Meyer H P, Boswijk H C, Rothuizen J (1999) Evaluation of ammonia measurements in dogs with two analysers in use in veterinary practice. Vet Rec 144, 523-526.
- Hitt M E & Jones B D (1986) Effects of storage, temperature and time on canine plasma ammonia concentrations. Am J Vet Res 47, 363-364.
Other sources of information
- Ettinger S J & Feldman E C (eds) (2000) Textbook of Veterinary Internal Medicine. 5th edn. Philadelphia: W B Saunders & Co.
- Kaneko J J, Harvey J W & Brass M L (eds) (1997) Clinical Biochemistry of Domestic Animals. 5th edn. Boston: Academic Press.
- Duncan J R, Prasse K W & Mahaffey E A (1994) Veterinary Laboratory Medicine. Clinical Pathology. 3rd edn. Iowa: Iowa University Press.