Wild Rye Grass, IgE, Serum
Use
This test is useful for establishing a diagnosis of an allergy to wild rye grass by identifying specific allergens responsible for allergic responses and/or anaphylactic episodes. It helps confirm sensitization prior to immunotherapy and investigate the specificity of allergic reactions to various allergens such as insect venom, drugs, or chemicals. Detection of IgE antibodies provides an indication of the immune response to these allergens, which may be associated with allergic diseases.
Special Instructions
For a listing of allergens available for testing, refer to the Allergens - Immunoglobulin E (IgE) Antibodies document. If not ordering electronically, complete, print, and send an Allergen Test Request (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. Additionally, some individuals with clinically insignificant sensitivity may have measurable IgE antibodies in serum, and 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
- 16922-7
- 16922-7
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 (preferred), Plastic vial (submission)
Collection Instructions
Centrifuge and aliquot serum into a plastic vial.
Causes for Rejection
None specific; gross hemolysis and gross lipemia are acceptable.
Stability Requirements
| Temperature | Period |
|---|---|
| Refrigerated | 14 days |
| Frozen | 90 days |