Immunoglobulin E (IgE), Total



Quest Diagnostics Test Code: 542

Immunoglobulins are special proteins that the body makes in order to fight foreign particles and infections. All antibodies are immunoglobulins. There are different types of immunoglobulins. Immunoglobulin E (IgE) is an immunoglobulin mostly found in the skin and mucous membranes like the gastrointestinal tract. It is the immunoglobulin which is responsible for allergic and anaphylactic reactions. This test measures the amount of IgE in the blood and is useful to help diagnose allergies after exposure to an antigen, like wheat or latex.

This test is performed in following conditions such as:

• Swelling, itching or irritation around the mouth or throat
• Itchy or watery eyes
• Hives or rash
• Stomach cramps
• Nausea, diarrhea, vomiting
• Difficulty breathing


Specimen Collected
  • Blood
Estimated Time Taken

Turnaround for this test is typically 1-3 business days.