Lemon, IgE, Serum
Use
This test is useful for establishing a diagnosis of an allergy to lemon and defining the allergen responsible for eliciting signs and symptoms. It helps identify allergens responsible for an allergic response or anaphylactic episode, confirming sensitization prior to starting immunotherapy, and investigating specificity of allergic reactions to various allergens. It is important for determining allergens involved in allergic diseases, potentially leading to appropriate allergy management and treatment strategies.
Special Instructions
For a listing of allergens available for testing, refer to the Allergens - Immunoglobulin E (IgE) Antibodies PDF. If not ordering electronically, complete and send an Allergen Test Request form (T236) with the specimen.
Limitations
Testing for IgE antibodies is not useful in patients previously treated with immunotherapy to determine if residual clinical sensitivity exists or in patients for whom the medical management does not depend on identification of allergen specificity. False-positive results may occur in patients with markedly elevated serum IgE (>2500 kU/L) due to nonspecific binding.
FDA ApprovedNew York Approved
Methodology
Immunoassay (Fluorescence Enzyme Immunoassay (FEIA))
Biomarkers
LOINC Codes
- 6159-8
- 6159-8
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
Preferred: Serum gel; Acceptable: Red top; Submission Container/Tube: Plastic vial
Collection Instructions
Centrifuge and aliquot serum into a plastic vial.
Causes for Rejection
Gross hemolysis: OK; Gross lipemia: OK
Stability Requirements
| Temperature | Period |
|---|---|
| Refrigerated | 14 days |
| Frozen | 90 days |