Test Overview
Test Methodology

Fluorescence Enzyme Immunoassay (FEIA)

Test Usage

Testing for IgE antibodies may be useful to establish the diagnosis of an allergic disease and to define the allergens responsible for eliciting signs and symptoms.

Reference Range *

Class 0 <0.35 Negative; Class 1 0.35-0.69 Equivocal; Class 2 0.70-3.49 Positive; Class 3 3.50-17.4
Positive; Class 4 17.5-49.9 Strongly positive; Class 5 50.0-99.9 Strongly positive; Class 6 > or =100
Strongly positive

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Test Details
Days Set Up
Monday - Saturday
Analytic Time

2 - 5 days

Soft Order Code
MiChart Code
Reference Laboratory
Mayo GRW
Special Testing
Specimen Requirements

Collect specimen in SST or red top tube. Spin and aliquot into a screw capped plastic tube. Send to Specimen Processing refrigerated

Normal Volume
0.5 mL for each 5 allergens requested
Minimum Volume
For 1 allergen: 0.3 mL; For more than 1 allergen: (0.05 mL x number of allergens) + 0.25 mL dead space
Storage Temperature
Refrigerated preferred, frozen acceptable
Additional Information

Test performed by Mayo Clinic Laboratories

CPT Code
Fee Code