Greek Fennel, IgE, Serum
Use
Establishing the diagnosis of an allergy to Greek fennel involves identifying allergens that elicit signs and symptoms of allergic response and/or anaphylactic episodes. Testing aids in confirming sensitization before beginning immunotherapy and can investigate specificity of allergic reactions to various allergens including insect venom, drugs, or chemicals. The presence of IgE antibodies signifies the potential immune response to allergens associated with allergic disease, helping align medical management with allergen specificity.
Special Instructions
For test orders not done electronically, use the Allergen Test Request form (T236) and send it with the specimen. The test is available for New York State clients and can be requested through the specified ordering process.
Limitations
Testing for IgE antibodies is not useful for patients previously treated with immunotherapy when determining residual clinical sensitivity, or when medical management doesn't require identifying allergen specificity. False-positive results can occur in patients with high serum IgE levels (>2500 kU/L) due to nonspecific binding.
New York Approved
Methodology
Immunoassay (FEIA)
Biomarkers
LOINC Codes
- 19739-2
- 19739-2
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
Plastic vial
Collection Instructions
Centrifuge and aliquot serum into a plastic vial. Preferred collection in serum gel tube, acceptable in red top tube.
Causes for Rejection
Gross hemolysis: OK; Gross lipemia: OK
Stability Requirements
| Temperature | Period |
|---|---|
| Refrigerated | 14 days |
| Frozen | 90 days |