Yale New Haven Hospital

Department of Laboratory Medicine
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Immunoglobulin E

Lab Section: 



Lab Location: 

Main Lab

Test ID: 




Total IgE


Fluorescence Enzyme Immunoassay (FEIA)


Monday - Friday


3 days

Specimen Requirements: 

Collection: 5.0 mL Blood in a Gold Top Tube.
Pediatric volume: 3 mL.
1 - 30 Allergens draw 1 Gold Top Tube
31 - 60 Allergens draw 2 Gold Top Tubes
>60 Allergens draw 3 Gold Top Tubes
Unacceptable conditions: Grossly hemolyzed specimens
Stability: After separation from cells: Ambient: 2 days; Refrigerated: 2 weeks; Frozen: 3 months



Clinical Indications: Testing for IgE antibodies may be useful to define the specific allergen responsible for disease and/or anaphylactic episode, to confirm sensitization to particular allergens prior to beginning immunotherapy. The correlation of allergy laboratory results with clinical history and in vivo reactivity to specific allergens is essential. A negative test may not rule out clinical allergy or even anaphylaxis

Reference Interval: 

<115 kU/L 

CPT Code(s): 


Last Changed: 

01/05/2017 15:25:29

Last Reviewed: 

8/17/2017 1:06:54 PM