Fluorescence Enzyme Immunoassay (FEIA)
Assessing mast cell activation, which may occur as a result of anaphylaxis or allergen challenge and assessing patients with systemic mastocytosis or mast cell activation syndrome.
Tryptase may be undetectable or not elevated in some patients with acute mast cell activation if specimens are obtained >12 hours after an anaphylactic episode.
2 - 6 days
- Tryptase, S
Test sent to Mayo Medical Laboratories.