Bay Leaf, IgE, Serum
Use
This test is useful for establishing the diagnosis of an allergy to bay leaf and for defining the allergen responsible for eliciting signs and symptoms. It aids in identifying allergens responsible for allergic response and/or anaphylactic episodes, confirming sensitization prior to beginning immunotherapy, and investigating the specificity of allergic reactions to insect venom allergens, drugs, or chemical allergens. 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.
Special Instructions
For a listing of allergens available for testing, consult the Allergens - Immunoglobulin E (IgE) Antibodies resource. If not ordering electronically, complete, print, and send an Allergen Test Request form with the specimen. Authorized users can sign in to Test Prices for detailed fee information, or contact Customer Service for assistance.
Limitations
Some individuals with clinically insignificant sensitivity to allergens may have measurable levels of IgE antibodies in serum, which must be interpreted cautiously. False-positive results may occur in patients with markedly elevated serum IgE due to nonspecific binding to allergen solid phases.
New York Approved
Methodology
Immunoassay (FEIA)
Biomarkers
LOINC Codes
- 7125-8
- 7125-8
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
For 1 allergen: 0.3 mL
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 |