Tomato, IgE, Serum
Use
This test is useful for establishing a diagnosis of an allergy to tomatoes. It helps define the allergen responsible for eliciting allergic signs and symptoms, identifying allergens responsible for allergic responses or anaphylactic episodes, confirming sensitization prior to beginning immunotherapy, and investigating the specificity of allergic reactions to insects, drugs, or chemicals. However, it is not useful for determining residual clinical sensitivity in patients previously treated with immunotherapy or in patients whose management does not depend on identifying allergen specificity.
Special Instructions
For a listing of allergens available for testing, see the provided "Allergens - Immunoglobulin E (IgE) Antibodies" PDF. If not ordering electronically, complete and send an Allergen Test Request form (T236) with the specimen.
Limitations
Some individuals with clinically insignificant sensitivity to allergens may have measurable levels of IgE antibodies in serum. False-positive results may occur in patients with significantly elevated serum IgE (>2500 kU/L) due to nonspecific binding. The test is not useful for patients previously treated with immunotherapy to determine if residual clinical sensitivity exists or where management does not rely on allergen specificity.
FDA ApprovedNew York Approved
Methodology
Immunoassay (FEIA)
Biomarkers
LOINC Codes
- 6266-1
- 6266-1
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 for 1 allergen
Container
Serum gel or Red top tube
Collection Instructions
Centrifuge and aliquot serum into a plastic vial.
Causes for Rejection
None specified due to hemolysis or lipemia.
Stability Requirements
| Temperature | Period |
|---|---|
| Refrigerated | 14 days |
| Frozen | 90 days |