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HelpTest Code IGE Immunoglobulin E (IgE), Serum
Reporting Name
Immunoglobulin E (IgE), SUseful 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
SerumOrdering Guidance
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) Performed
Monday through Friday
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 |
Report Available
Same day/1 day to 3 daysReject Due To
| Gross hemolysis | OK |
| Gross lipemia | OK |
Method Name
Fluorescence Enzyme Immunoassay (FEIA)