Cultivated Oat, IgE, Serum
Use
This test is useful for establishing a diagnosis of an allergy to cultivated oat, defining the allergen responsible for eliciting signs and symptoms, and identifying allergens responsible for allergic responses or anaphylactic episodes. It can confirm sensitization prior to beginning immunotherapy and investigate the specificity of allergic reactions to insect venom allergens, drugs, or chemical allergens. Testing for IgE antibodies in serum provides an indication of the immune response to allergens that may be associated with allergic diseases.
Special Instructions
IgE antibody testing is not useful for patients previously treated with immunotherapy to determine if residual clinical sensitivity exists or in cases where medical management does not depend upon identification of allergen specificity. If not ordering electronically, complete and send an Allergen Test Request form (T236) with the specimen.
Limitations
Serum IgE levels vary directly with the concentration of specific IgE antibodies. False-positive results may occur in patients with markedly elevated serum IgE (>2500 kU/L) due to nonspecific binding. The allergens chosen for testing often depend on patient age, allergen exposure history, and clinical manifestations. Some individuals with clinically insignificant sensitivity may still have measurable IgE levels.
New York Approved
Methodology
Immunoassay (FEIA)
Biomarkers
LOINC Codes
- 6093-9
- 6093-9
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: Plastic vial
Collection Instructions
Centrifuge and aliquot serum into a plastic vial.
Causes for Rejection
None explicitly stated; Gross hemolysis and lipemia are acceptable.
Stability Requirements
| Temperature | Period |
|---|---|
| Refrigerated | 14 days |
| Frozen | 90 days |