Allergen Component Testing

Testing for whole-allergen proteins can help you better diagnose allergies/ sensitizations and prepare personalized management plans.

Allergen components—in conjunction with whole-allergen test results—help you better diagnose allergies, allowing you to prepare more comprehensive management plans.

Allergen Component Testing (ACT), which measures specific IgE by blood test, is the first step in discovering the likelihood of a systemic reaction and the necessary precautions that may be prescribed.

High levels of a particular IgE antibody can predict the likelihood of an allergic sensitivity, but may not be solely predictive of reactions or allergic response.

Knowing which protein your patient has high levels of IgE to can help you develop a management plan.



70% of children with egg allergy do not react to baked eggs.

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75% of children with milk allergy do not react to baked milk.

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77.6% of peanut-sensitive patients may not be at risk for a systemic reaction.

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Tree nuts

Nearly all tree nuts have been associated with fatal allergic reactions.

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Diagnose by the numbers

  • Assess risks for systemic reactions and cross-reactivity
  • Address anxiety with individualized management plans
  • Enable confidence in dietary and lifestyle choices

As in all diagnostic testing, a diagnosis must be made by the physician based on test results, individual patient history, the physician’s knowledge of the patient, and the physician’s clinical judgement.

Get more information

For more information, contact your local Sales Representative.


For clinical information and specimen requirements,
visit the test directory.


Download the Allergen Component Testing brochure.