Immunoglobulin E, (IgE) Total:
Fasting Required: No
Specimen: Blood
Lab: Quest Diagnostics
Results: Test run Mon-Fri; Average processing time 2-4 days
Note: Result turnaround times are an estimate and are not guaranteed. Our reference lab may need additional time due to weather, holidays, confirmation/repeat testing, or equipment maintenance.
Limitations: Some individuals with allergies have low total IgE but high concentration of allergen-specific IgE and may even suffer anaphylaxis with low to undetectable concentrations of IgE or allergen-specific IgE antibodies.
Description: IgE is associated with allergies, allergic diseases, and with parasitic infections. It is almost always measured as part of an allergy testing blood panel.
Alternative Name(s): Immunoglobulin E