White Bean, IgE, Serum
Use
The test is useful for diagnosing an allergy to white bean and determining the specific allergen responsible for allergic reactions. This test helps identify allergens that cause allergic response and anaphylactic episodes, ascertain sensitization before starting immunotherapy, and investigate the specificity of allergic reactions to various allergens. It provides indications of immune response associated with allergic disease by measuring IgE antibodies in vitro. The sequence of sensitization and clinical manifestations often starts with food sensitivity in infants and children, progressing to sensitivity to inhalant allergens in older children and adults.
Special Instructions
For electronic orders, complete a specific form and send it with the specimen. The test is performed Monday through Friday, and results are typically available the same day or within 1 to 3 days. The test is CLIA verified and uses manufacturer instructions per FDA clearance.
Limitations
Testing for IgE antibodies is not useful in previously immunotherapy-treated patients to check for residual sensitivity or when medical management doesn't require allergen identification. False positives may occur in patients with significantly elevated IgE levels due to nonspecific binding. Interpreting results requires clinical context as some individuals with insignificant sensitivities might show measurable IgE levels.
Methodology
Immunoassay (FEIA)
Biomarkers
LOINC Codes
- 6279-4
- 6279-4
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
Preferred: Serum gel; Acceptable: Red top; Submission: Plastic vial
Collection Instructions
Centrifuge and aliquot serum into a plastic vial.
Causes for Rejection
None specified for gross hemolysis and lipemia
Stability Requirements
| Temperature | Period |
|---|---|
| Refrigerated | 14 days |
| Frozen | 90 days |
