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HelpTest Code LAB74 Immunoglobulin E (IgE) Total
Useful For
- Aiding in the diagnosis of IgE-mediated allergic disorders such as such as hay fever, atopic bronchitis and dermatitis.
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Aiding in clinical differentiation between atopic (i.e., predisposition to excessive IgE reaction) and non-atopic (non-IgE mediated) allergic diseases.
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Elevated serum IgE concentrations can also occur in non-allergic diseases such as congenital immunodeficiency syndromes, HIV infection, graft-versushost disease, severe burns and parasitic diseases.
Methodology
ImmunoCAP sandwich assay
Performing Laboratory
Bozeman Outpatient Services at North 19th
Specimen Requirements
Specimen Type: Plasma or serum
Container/Tube: Gold top SST or red top
Specimen Volume: 1 mL
Specimen Minimum Volume: 0.5 mL
Specimen Transport Temperature
Refrigerated
Specimen Stability
| Specimen Type | Temperature | Time |
|---|---|---|
| Plasma or Serum | Ambient | 8 hours |
| Refrigerated | 7 days | |
| Frozen | 3 months |
Reference Values
Adults: ≤ 214 kU/L
During childhood and adolescence, reference ranges for IgE are dependent on age and can vary over a wide range:
| Age | IgE |
|---|---|
| 0-6 months | ≤ 13 kU/L |
| 6 months-1 year | ≤ 34 kU/L |
| 1 year - 3 years | ≤ 97 kU/L |
| 3 years - 4 years | ≤ 199 kU/L |
| 4 years-7 years | ≤ 307 kU/L |
| 7 years-9 years | ≤ 403 kU/L |
| 9 years-13 years | ≤ 696 kU/L |
| 13 years-16 years | ≤ 629 kU/L |
| 16 years-18 years | ≤ 537 kU/L |
| ≥ 18 years | ≤ 214 kU/L |
Day(s) Test Set Up
Monday through Friday
Test Classification and CPT Coding
82785