The Cat dander IgE level test is a blood test that measures the amount of a specific antibody called IgE in your body in response to exposure to cat dander. IgE is produced by your immune system when it detects an allergen, such as cat dander, and triggers an allergic reaction. This test helps determine if you have an allergy to cats.
When you come into contact with cat dander, your body may produce an excessive amount of IgE antibodies, leading to symptoms like sneezing, itching, watery eyes, and difficulty breathing. By measuring the level of IgE in your blood, this test can confirm if your symptoms are caused by an allergy to cats.