An ammonia levels test measures the amount of ammonia in a sample of your blood. Ammonia is also called NH3. It is a normal waste product in your body. Healthy bacteria in your intestines make ammonia when you digest protein in the foods you eat.
An ammonia levels test may be used to help diagnose high ammonia levels in people who have symptoms. The test alone can't diagnose conditions that increase the amount of ammonia in your blood. But it may be used with other tests to help find the cause.
Source: MedlinePlus, U.S. National Library of Medicine
Normal range
- Normal
- 40–70 ug/dL
Ranges from American Board of Internal Medicine (Laboratory Test Reference Ranges).
What an abnormal result can be associated with
- A high result
- Hyperammonemia
- A low result
- Hypoammonemia
Associations from LOINC2HPO (Human Phenotype Ontology). This is reference information, not a diagnosis — only a clinician can interpret your result in context.
Details
- Sample
- Serum or plasma · LOINC
- Collection
- 0.5 mL · Mayo Clinic Laboratories (Test Catalog)
- Code
- LOINC 16362-6 · ug/dL
- Also known as
- Ammon, Renal, NH3, Amon, Amm