Celery Allergy Blood Test in Arizona

What this test measures

Celery is a common food allergen, and reactions can range from mild oral itching to hives, swelling, or more serious symptoms. Celery belongs to the same plant family as carrot, parsley, and celeriac, so some people react to several of these foods. A blood test can show whether the immune system has produced IgE antibodies that recognize celery proteins.

The test measures allergen-specific IgE in serum with a laboratory immunoassay. A single blood draw is enough, and the laboratory reports the level of celery-specific IgE along with a reactivity class. Celery allergens include Api g 1, a protein that cross-reacts with birch pollen, and Api g 4, a profilin, which can explain reactions to several plant foods at once.

A positive result shows sensitization rather than a confirmed allergy, because symptoms depend on exposure and individual sensitivity. Clinicians interpret the result with a symptom history, and sometimes other food or pollen tests, before deciding whether avoidance or further evaluation is appropriate. Anyone with a history of severe reactions should seek guidance from a qualified healthcare provider.