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Serum Tryptase

About This Test

Department: Immunology

Requirement: Record time of onset of reaction Serum sample should be taken ideally immediately, then 1-3 hours and 6-24 hours after reaction began. Provide any details of suspected allergens (contact within 1 hour prior to reaction)

Turnaround Time: Single result 8 days Full report 20 days

High levels are associated with anaphylaxis, that resolves within 24 hours. Persistently raised tryptase levels are associated with the elderly and mastocytosis.

Other Comments:

Basal levels are in the range of 2 to 14ug/L, with peak levels of more than 40ug/L being associated with anaphylaxis.