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Test Code IGE Immunoglobulin E (IgE), Serum

Reporting Name

Immunoglobulin E (IgE), S

Useful For

Evaluation of patients with suspected diseases associated with elevations in total immunoglobulin E (IgE), including allergic disease, primary immunodeficiencies, infections, malignancies, or other inflammatory diseases

 

Diagnostic evaluation of patients with suspected allergic bronchopulmonary aspergillosis

 

Identification of candidates for omalizumab (anti-IgE) therapy

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Specimen Type

Serum


Advisory Information


For a listing of allergens available for testing, see Allergens - Immunoglobulin E (IgE) Antibodies in Special Instructions



Specimen Required


Container/Tube:

Preferred: Red top

Acceptable: Serum gel

Specimen Volume: 0.5 mL


Specimen Minimum Volume

For total IgE: 0.3 mL
For total IgE and more than 1 allergen: 0.05 mL x number of allergen-specific IgEs + 0.25 mL dead space

Specimen Stability Information

Specimen Type Temperature Time Special Container
Serum Refrigerated (preferred) 14 days
  Frozen  90 days

Reference Values

Results reported in kU/L

Age

Reference interval

0-5 months

≤13

6-11 months

≤34

1 and 2 years

≤97

3 years

≤199

4-6 years

≤307

7 and 8 years

≤403

9-12 years

≤696

13-15 years

≤629

16 and 17 years

≤537

18 years and older

≤214

Day(s) and Time(s) Performed

Monday through Friday; 9 a.m.-8 p.m.

Saturday; 8 a.m.-3 p.m.

Test Classification

This test has been cleared, approved or is exempt by the U.S. Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.

CPT Code Information

82785

LOINC Code Information

Test ID Test Order Name Order LOINC Value
IGE Immunoglobulin E (IgE), S 19113-0

 

Result ID Test Result Name Result LOINC Value
IGE Immunoglobulin E (IgE), S 19113-0

Reject Due To

Gross hemolysis OK
Gross lipemia OK

Method Name

Fluorescence Enzyme Immunoassay (FEIA)