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Also known as: Mast Cell Tryptase; Alpha Tryptase; Beta Tryptase; Mature Tryptase
Formal name: Total Tryptase

At a Glance

Why Get Tested?

To help diagnose anaphylaxis, mastocytosis (too many mast cells), or mast cell activation

When to Get Tested?

When you have symptoms such as flushing, nausea, throat swelling, or low blood pressure that may be due to a life-threatening allergic reaction; when your healthcare provider suspects that you have mastocytosis or mast cell activation

Sample Required?

A blood sample drawn from a vein in your arm

Test Preparation Needed?

None, but timing of the sample soon after the beginning of symptoms can be important.