Cucumber, IgE, Serum
Use
This test is used for diagnosing an allergy to cucumber by establishing the presence of IgE antibodies in the serum, which indicates an immune response to the cucumber allergen possibly associated with allergic disease. The test helps in defining the specific allergens responsible for eliciting allergic signs and symptoms, including confirmation prior to immunotherapy initiation.
Special Instructions
Testing for IgE antibodies is not useful in patients previously treated with immunotherapy if residual sensitivity exists or in situations where management does not depend on allergen specificity identification. The test must be ordered alongside an Allergen Test Request form if not ordered electronically.
Limitations
Some individuals may have measurable IgE levels without significant clinical sensitivity, necessitating clinical context consideration for result interpretation. False positives can occur in patients with highly elevated serum IgE (>2500 kU/L) due to nonspecific binding to allergen solid phases.
FDA ApprovedNew York Approved
Methodology
Immunoassay (FEIA)
Biomarkers
LOINC Codes
- 6724-9
- 6724-9
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
(0.05 mL x number of allergens) + 0.25 mL deadspace
Container
Serum gel (preferred) or red top; Plastic vial for submission
Collection Instructions
Centrifuge and aliquot serum into a plastic vial.
Causes for Rejection
Gross hemolysis, Lipemia.
Stability Requirements
| Temperature | Period |
|---|---|
| Refrigerated | 14 days |
| Frozen | 90 days |