Oyster, IgE, Serum
Use
This test is used for establishing a diagnosis of an allergy to oyster and defining the specific allergen responsible for eliciting signs and symptoms. It is useful for identifying allergens responsible for allergic reactions and/or anaphylactic episodes, confirming sensitization before beginning immunotherapy, and investigating the specificity of allergic reactions to various allergens like insect venom and drugs. Testing for IgE antibodies helps in understanding immune response relevant to allergic disease, particularly for individuals predisposed to develop allergic reactions.
Special Instructions
For a listing of allergens available for testing, refer to Mayo Clinic's Allergens - Immunoglobulin E (IgE) Antibodies documentation. If not ordering electronically, an Allergen Test Request form must be completed and sent with the specimen.
Limitations
Testing for IgE antibodies is not useful in patients previously treated with immunotherapy, to determine residual clinical sensitivity. Some individuals with clinically insignificant sensitivity might still show measurable levels of IgE antibodies. High IgE levels may result in false positives due to nonspecific binding. The test should be interpreted within a clinical context and is not indicated when allergen specificity identification does not alter the patient's medical management.
FDA ApprovedNew York Approved
Methodology
Immunoassay (Fluorescence Enzyme Immunoassay (FEIA))
Biomarkers
LOINC Codes
- 7558-0
- 7558-0
Result Turnaround Time
1-3 days
Related Documents
For more information, please review the documents below
Specimen
Serum
Volume
0.5 mL
Minimum Volume
0.3 mL
Container
Serum gel or Red top tube; Plastic vial for submission
Collection Instructions
Centrifuge and aliquot serum into a plastic vial.
Causes for Rejection
None noted for gross hemolysis or lipemia.
Stability Requirements
| Temperature | Period |
|---|---|
| Refrigerated | 14 days |
| Frozen | 90 days |