Cat Allergy Test (IgE): What Your Result Means

Cat Allergy Test (IgE) — Identify Cat Dander Sensitivity

Cat allergy is one of the most common pet allergies worldwide. The allergen Fel d 1, found in cat saliva, skin, and urine, becomes airborne and can trigger symptoms even without direct contact. This IgE blood test detects whether your immune system produces antibodies against cat dander, helping to confirm or rule out a cat allergy and guide appropriate treatment.

Why Test Cat Allergy Test?

Testing is recommended if you experience sneezing, nasal congestion, itchy or watery eyes, skin rashes, or asthma-like symptoms when near cats or in environments where cats live. It is also useful if you are considering getting a cat, if antihistamines provide temporary relief around cats, or if you want to differentiate cat allergy from other indoor allergens such as dust mites or mould.

What Do High Cat Allergy Test Levels Mean?

Elevated IgE levels indicate that your immune system is producing antibodies against cat dander proteins. This supports a diagnosis of cat allergy and may explain symptoms such as rhinitis, conjunctivitis, eczema, or asthma when exposed to cats. The higher the IgE level, the stronger the sensitisation, although symptom severity can vary between individuals.

What Do Low Cat Allergy Test Levels Mean?

Low or undetectable IgE levels make a cat allergy unlikely. However, symptoms may still be caused by other indoor allergens such as dust mites, mould, or dog dander. If symptoms persist, further allergy testing may be warranted.

Symptoms to Watch For

Sneezing and runny nose around cats
Itchy, watery, or red eyes
Nasal congestion or post-nasal drip
Skin rash or hives after contact with cats
Wheezing or shortness of breath
Worsening of eczema or asthma symptoms

Who Should Get Tested?

People who experience allergic symptoms when near cats or in homes with cats
Individuals considering adopting a cat who want to check for sensitivity
Asthma patients whose symptoms worsen indoors
Those who want to differentiate between cat allergy and other indoor allergens

How to Prepare for Your Test

No special preparation is required. You do not need to fast. Take your ID with you to the sampling location. Bring valid ID to your appointment.

Order Your Blood Test

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

Allergy Test – Cat Dander →

Frequently Asked Questions

Can I develop a cat allergy later in life?

Yes. Cat allergies can develop at any age, even if you have lived with cats before without problems. Sensitisation can occur gradually over time.

Does a positive test mean I can never be around cats?

Not necessarily. Depending on your sensitivity level and symptoms, strategies such as antihistamines, air purifiers, limiting cat access to bedrooms, and allergy immunotherapy can help manage exposure.

Is this test the same as a skin prick test?

Both measure allergic sensitisation but work differently. The blood test measures IgE antibodies in your blood and can be done regardless of medication use, while a skin prick test measures the skin reaction directly.

Reviewed by

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.