Total IgE

Immunoglobulin E (IgE) is a type of antibody produced by the immune system that helps to defend the body against potential threats or allergies. The body makes many different types of IgE, each of which is specific to a substance that triggers an immune response, such as pollen, dust mites, food allergens, and insect venom. When the immune system encounters an allergen, it triggers the production of IgE antibodies, which bind to other immune cells.

The Total IgE test measures the amount of IgE antibodies in the blood. However, it does not help to identify the specific type of IgE antibody. An IgE test may be needed if you have asthma or allergy symptoms, like itchy or watery eyes, swelling, shortness of breath, skin rash, congestion, or sneezing. For people with allergy-induced asthma, testing may help to determine the right treatment and suitable dosage. The Total IgE test may also be needed if you have symptoms of an immune disorder or a parasitic infection, such as abdominal pain, cough, diarrhea, dry skin, hives, etc. 

No fasting is required for this test. You can eat and drink normally as per your routine. Also, let your doctor know about any medications you might be taking, as some of these medications (such as antihistamines) could affect your test results if taken before this test.

Test result ranges are approximate and may differ slightly between labs depending on the methodology and laboratory guidelines. Talk to your doctor about your specific test results. The results will help the doctor determine your medical condition, make recommendations for lifestyle modifications such as diet and exercise, decide whether or not medication will be required to manage your condition, and formulate your overall treatment plan.