Are there other allergens I could be sensitized to?*
Some people with a cat allergy may also experience symptoms when exposed to dander, saliva, and urine from other mammalian animals, such as dogs, guinea pigs, horses, pigs, chickens, sheep, goats, rabbits, and hamsters. In addition, ingestion of foods such as milk, eggs, beef, and pork (as seen in pork-cat syndrome) may also elicit symptoms. This is called cross-reactivity and occurs when your body's immune system identifies the proteins, or components, in different substances as being structurally similar or biologically related, thus triggering a response.1
Knowing the proteins, or components, within each allergen that are triggering your symptoms can help guide your management plan. With that in mind, and based on your symptom history, your healthcare provider may suggest something called a specific IgE component test, which can help reveal the risk profile you belong to. Results from this test can also help your healthcare provider decide if immunotherapy may reduce your symptoms.1
Already have your specific IgE component test results?
Your component test results will include the name of the components (a series of letters and numbers). Your healthcare provider will likely review the results with you, but here you'll find an at-a-glance breakdown you can use as a reference. Simply match the component names to the list below to see what they mean in terms of symptom management.1,8
rFel d 1
- Marker for risk of severe asthma.
- Cat allergen immunotherapy may be an option.
- Indicates that symptoms may be caused specifically by cat.
rFel d 2, rFel d 4
- Cats or other mammalian pets, e.g., dogs, horses, and mice, may cause symptoms due to cross-reactivity.
- Ingestion of milk, beef, and pork (pork-cat syndrome) may elicit symptoms due to cross-reactivity. Cooked milk and beef may be tolerated.
- High levels of IgE to these proteins are acociated with atopic dermatitis in cat-allergic children.
rFel d 7
- Dogs may cause symptoms due to cross-reactivity.
Test results should be interpreted by your healthcare provider in the context of your clinical history. Final diagnosis and decision on further management is made by your healthcare provider.
*These products may not be approved for clinical use in your country. Please work with your healthcare provider to understand availability.