Allergy

Peanut Allergy Test (IgE) — Confirm Peanut Sensitivity

Peanut allergy is one of the most common and potentially severe food allergies. Even trace amounts can trigger reactions ranging from mild hives to life-threatening anaphylaxis in highly sensitive individuals. This IgE blood test detects antibodies against peanut proteins, helping to confirm a diagnosis, estimate the degree of sensitivity, and guide safe management of peanut exposure in daily life.

Why Test Peanut Allergy Test?

This test is recommended if you or your child have experienced allergic symptoms after eating peanuts or peanut-containing foods, if you are unsure whether you react to peanuts, if you have a family history of food allergies, or if you need a confirmed diagnosis before introducing or eliminating peanuts from the diet.

What Do High Peanut Allergy Test Levels Mean?

High IgE levels indicate a likely peanut allergy. The level can also suggest the degree of sensitivity. Even low exposures may cause a reaction in highly sensitised individuals. An action plan should be discussed with an allergist.

What Do Low Peanut Allergy Test Levels Mean?

Low or negative IgE levels reduce the likelihood of a peanut allergy but do not completely rule it out. Results must always be interpreted in combination with symptoms and medical history.

Symptoms to Watch For

  • Hives, redness, or swelling of the skin
  • Tingling or itching in the mouth and throat
  • Nausea, vomiting, or stomach cramps
  • Tightening of the throat or difficulty swallowing
  • Shortness of breath or wheezing
  • Dizziness or fainting (signs of anaphylaxis)

Who Should Get Tested?

  • Anyone who has had a reaction after eating peanuts
  • Parents of children with suspected peanut allergy
  • People with a family history of severe food allergies
  • Individuals who want guidance on how to safely manage peanut exposure

How to Prepare for Your Test

No special preparation is required. No fasting needed. Bring your ID to the sampling location. Bring valid ID to your appointment.

Order Your Blood Test

Test your Peanut Allergy Test levels with an accredited Swedish laboratory. Results within days, reviewed by Wellth.

Peanut Allergy Test →

Frequently Asked Questions

How severe can a peanut allergy reaction be?
Peanut allergy can cause anaphylaxis, a life-threatening reaction involving breathing difficulties, a drop in blood pressure, and loss of consciousness. People with confirmed peanut allergy should carry an adrenaline auto-injector.
Can you outgrow a peanut allergy?
About 20% of children with peanut allergy outgrow it. Regular follow-up testing and supervised oral food challenges can help determine if the allergy has resolved.
Is this test enough to confirm peanut allergy?
The IgE blood test is a strong indicator, but diagnosis should always be made in consultation with an allergist, who may also consider your history, symptoms, and possibly an oral food challenge.
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Wellth Team

Wellth

Our content is written and reviewed by Wellth, and fact-checked against peer-reviewed research and current Swedish clinical guidelines.

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Medical Disclaimer

The information on this page is provided for informational purposes only and does not constitute professional medical advice, diagnosis, or treatment. Wellth provides health information and testing services but is not a substitute for clinical care. Always consult a qualified healthcare provider if you have questions about a medical condition. If you are experiencing severe or urgent symptoms, contact your doctor or call 1177 Vårdguiden. Blood test results should be interpreted by a qualified healthcare professional in the context of your complete medical history.