Test Overview
Test Methodology

Fluorescence Enzyme Immunoassay (FEIA)

Test Usage

In vitro serum testing for IgE antibodies provides an indication of the immune response to allergen(s) that may be associated with allergic disease.

Reference Range *

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

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

Test Details
Days Set Up
Monday - Friday
Analytic Time

2 - 4 days

Soft Order Code
MiChart Code
Reference Laboratory
Mayo (CHER)
Special Testing
Specimen Requirements
Collection Instructions

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

Normal Volume
0.5 mL serum
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
Additional Information

Test performed by Mayo Clinic Laboratories

CPT Code
Fee Code