Yale New Haven Hospital

Department of Laboratory Medicine
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Lab Section: 

Immunology

 

Lab Location: 

Main Lab

Test ID: 

LAB3308

 

Methodology: 

Fluorescence Enzyme Immunoassay (FEIA)

Schedule: 

Monday-Friday

Reported: 

3 days

Specimen Requirements: 

Collection: 10.0 mL Blood in a Gold Top Tube.
Pediatric volume: 4 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: Ambient: 48 hours; Refrigerated: 2 weeks; Frozen: 3 months

 

Notes: 

Clinical Indications: Testing for IgE antibodies may be useful to define the specific allergen responsible for disease and/or anaphylactic episode or 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: 

Reference Range for Allergen Specific IgE:
Conc. (kUA/L)   Class   IgE Level
  <0.35           0       Neg
  0.35-0.69       1       Low
  0.70-3.49       2       Moderate
  3.50-17.49      3       High
  17.5-49.99      4       Very High
  50.0-100        5       Very High
  >100            6       Very High

Tests in this Panel: 

Specific IgE for Kentucky Blue Grass (Poa pratensis), American Elm, American Oak, Sugar Maple, Silver Birch, Pecan Hickory, Short/Common Ragweed, Meadow Fescue, Mugwort, Cocklebur, Cocksfoot(orchard), Goosefoot (Lamb Quarters) and Plantain.

CPT Code(s): 

86003x13

Last Changed: 

12/17/2016 16:30:05

Last Reviewed: 

8/17/2017 1:18:19 PM