At a Glance
Why Get Tested?
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
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.