White Hickory, IgE, Serum
Use
This test is used for establishing a diagnosis of an allergy to white hickory by identifying the specific allergens responsible for allergic responses or anaphylactic episodes. It is helpful in confirming sensitization before starting immunotherapy and investigating the specificity of allergic reactions to various allergens, including insect venom, drugs, or chemical allergens.
Special Instructions
Not useful for patients previously treated with immunotherapy to determine residual clinical sensitivity. The test is also not suitable for patients whose medical management does not depend on identifying allergen specificity. If not ordering electronically, complete and send an Allergen Test Request form with the specimen.
Limitations
Testing for IgE antibodies is not useful in patients previously treated with immunotherapy to determine if residual clinical sensitivity exists. False-positive results may occur in patients with high total serum IgE due to nonspecific binding. Results need to be interpreted in the clinical context as some individuals with clinically insignificant sensitivity may still have measurable levels of specific IgE antibodies.
FDA ApprovedNew York Approved
Methodology
Immunoassay (FEIA)
Biomarkers
LOINC Codes
- 7407-0
- 7407-0
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; for more than 1 allergen: (0.05 mL x number of allergens) + 0.25 mL deadspace
Container
Serum gel (preferred), Red top (acceptable), Submission: Plastic vial
Collection Instructions
Centrifuge and aliquot serum into a plastic vial.
Causes for Rejection
Not rejected; OK for gross hemolysis, OK for gross lipemia
Stability Requirements
| Temperature | Period |
|---|---|
| Refrigerated | 14 days |
| Frozen | 90 days |