Indicator Explainer
Ammonia
An inorganic compound composed of a single nitrogen atom covalently bonded to three hydrogen atoms that is an amidase inhibitor and neurotoxin. It is both manufactured and produced naturally from bacterial processes and the breakdown of organic matter. Ammonia is used in many industrial processes, and as a fertilizer and refrigerant. It is characterized as a colorless gas or compressed liquid with a pungent odor and exposure occurs by inhalation, ingestion, or contact.
This page explains what the indicator is and how results are interpreted in general terms. Reference ranges depend on the laboratory, the method, and your own situation — no single “normal value” applies to everyone. This page is health information, not a diagnosis. For symptoms, treatment, or urgent concerns, contact a healthcare professional.
When it is tested
Source: National Cancer Institute, NCI Thesaurus 26.09d, C76698. NCI definition, reproduced without modification under CC BY 4.0. Source identity and definition checked automatically on 2026-10-18. No individual clinical interpretation or human reviewer is asserted.
Reading results
Reference intervals and interpretation depend on the laboratory, specimen, method and clinical context. This source definition is educational information; it does not establish a diagnosis, product approval or suitability for an individual.
Also Known As
References
- NCI Thesaurus 26.09d — Ammonia (C76698)
- Source: National Cancer Institute, NCI Thesaurus 26.09d, C76698. NCI definition, reproduced without modification under CC BY 4.0.
- Controlled Hydrogen Delivery by Single-Atom Ru Accelerates Electrocatalytic Ammonia Synthesis. — Angew Chem Int Ed Engl, 2026-10-10 (PMID 42856087; literature)
- Mitigation strategies for ammonia inhibition and coupled regulation of operational parameters in high-solids anaerobic digestion of chicken manure: A critical review. — Bioresour Technol, 2026-10-08 (PMID 42849628; literature)
- Modeling atmospheric dispersion of ammonia over water and implications for in-water fate and trajectory. — Mar Pollut Bull, 2026-10-08 (PMID 42849101; literature)
- Evolution of dipole-dipole dynamics in cold ammonia collisions. — Nat Chem, 2026-10-07 (PMID 42844377; literature)