An allergy blood test is a medical test used to determine whether an individual has an allergy to a specific substance. The test measures the levels of IgE antibodies in the blood, which are produced by the immune system in response to allergens.
The blood sample is sent to a laboratory for analysis, where it is tested against a panel of allergens. Based on the levels of IgE antibodies present in the blood, the test can help identify specific allergens that may be causing an individual's allergy symptoms.
The test is typically recommended for individuals who may have an allergy but are unable to undergo a skin test, or for those who have a history of severe allergic reactions. Allergy blood tests are generally considered safe and have a low risk of complications.
It's important to discuss any concerns or questions about allergy blood tests with a healthcare provider.