Corn-Food, IgE, Serum
Use
This test is useful for establishing a diagnosis of allergy to corn-food, defining the allergen responsible for eliciting signs and symptoms, and identifying allergens responsible for allergic response and/or anaphylactic episodes. It helps confirm sensitization before beginning immunotherapy and investigates the specificity of allergic reactions to insect venom allergens, drugs, or chemical allergens. Detecting IgE antibodies in serum indicates an increased likelihood of allergic disease and assists in defining the allergens responsible for symptoms.
Special Instructions
If not ordering electronically, complete, print, and send an Allergen Test Request (T236) with the specimen. For a listing of allergens available for testing, see the Allergens - Immunoglobulin E (IgE) Antibodies document in Special Instructions.
Limitations
Testing for IgE antibodies is not useful in patients previously treated with immunotherapy to determine if residual clinical sensitivity exists or in patients in whom the medical management does not depend upon identification of allergen specificity. 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. Interpretation of test results should consider clinically insignificant sensitivity and the immune response context.
FDA ApprovedNew York Approved
Methodology
Immunoassay (FEIA)
Biomarkers
LOINC Codes
- 6087-1
- 6087-1
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
For 1 allergen: 0.3 mL; for more than 1 allergen: (0.05 mL x number of allergens) + 0.25 mL deadspace
Container
Preferred: Serum gel; Acceptable: Red top; Submission: Plastic vial
Collection Instructions
Centrifuge and aliquot serum into a plastic vial.
Causes for Rejection
None; gross hemolysis and lipemia are acceptable
Stability Requirements
| Temperature | Period |
|---|---|
| Refrigerated | 14 days |
| Frozen | 90 days |