Orange, IgE, Serum
Use
This test is useful for establishing a diagnosis of an allergy to orange. It helps define the allergen responsible for eliciting signs and symptoms, identify allergens responsible for allergic responses or anaphylactic episodes, confirm sensitization before starting immunotherapy, and investigate the specificity of allergic reactions to insect venom allergens, drugs, or chemical allergens.
Special Instructions
Testing for IgE antibodies is not useful in patients previously treated with immunotherapy to determine if residual clinical sensitivity exists or in patients whose medical management does not depend on the identification of allergen specificity. For ordering, if not electronic, complete a printed Allergen Test Request (T236) with the specimen.
Limitations
Some individuals with clinically insignificant sensitivity to allergens may have measurable levels of IgE antibodies in serum, and test results must be interpreted in clinical context. False-positive results for IgE antibodies may occur in patients with markedly elevated serum IgE (>2500 kU/L) due to nonspecific binding to allergen solid phases.
New York Approved
Methodology
Immunoassay (FEIA)
Biomarkers
LOINC Codes
- 6194-5
- 6194-5
Result Turnaround Time
1-3 days
Related Documents
For more information, please review the documents below
Specimen
Serum
Volume
0.5 mL for every 5 allergens requested
Minimum Volume
0.3 mL
Container
Plastic vial
Collection Instructions
Centrifuge and aliquot serum into a plastic vial.
Causes for Rejection
None specified for gross hemolysis or gross lipemia
Stability Requirements
| Temperature | Period |
|---|---|
| Refrigerated | 14 days |
| Frozen | 90 days |