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HelpTEST ID IGE Immunoglobulin E (IgE), Serum
Reporting Name
Immunoglobulin E (IgE), SSpecimen Type
SerumOrdering Guidance
For a listing of allergens available for testing, see Allergens - Immunoglobulin E (IgE) Antibodies
Specimen Required
Collection Container/Tube:
Preferred: Serum gel
Acceptable: Red top
Submission Container/Tube: Plastic vial
Specimen Volume: 0.5 mL
Collection Instructions: Centrifuge and aliquot serum into a plastic vial.
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 tests + 0.25 mL dead space
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Serum | Refrigerated (preferred) | 14 days | |
| Frozen | 90 days |
Method Name
Fluorescence Enzyme Immunoassay (FEIA)
Reject Due To
| Gross hemolysis | OK |
| Gross lipemia | OK |
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
Report Available
Same day/1 day to 3 daysSpecimen Retention Time
14 daysPerforming Laboratory
Mayo Clinic Laboratories in Rochester
CPT Code Information
82785
Useful For
Evaluating 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
Identifying candidates for omalizumab (anti-IgE) therapy