White Potato, IgE, Serum
Use
The test for IgE antibodies to white potato in serum is useful for establishing a diagnosis of an allergy to white potato. It helps in defining the allergen responsible for allergic responses and/or anaphylactic episodes. The test is also useful in confirming sensitization prior to starting immunotherapy and in investigating the specificity of allergic reactions to insect venom allergens, drugs, or chemical allergens.
Special Instructions
Additional common names for this test include Irish Potato, Solanum tuberosum, and Spud. If not ordering electronically, complete and send an Allergen Test Request (T236) with the specimen. For a listing of available allergens for testing, see the Allergens - Immunoglobulin E (IgE) Antibodies document.
Limitations
Testing for IgE antibodies is not useful in patients previously treated with immunotherapy to determine if residual clinical sensitivity exists. It is also not appropriate when medical management does not depend on the identification of allergen specificity. Some individuals with clinically insignificant sensitivity to allergens may have measurable levels of IgE antibodies in serum, which must be interpreted in the clinical context. False-positive results for IgE antibodies can occur in patients with elevated serum IgE levels (>2500 kU/L) due to nonspecific binding to allergen solid phases.
FDA ApprovedNew York Approved
Methodology
Immunoassay (FEIA)
Biomarkers
LOINC Codes
- 6220-8
- 6220-8
Result Turnaround Time
1-3 days
Related Documents
For more information, please review the documents below
Specimen
Serum
Volume
0.5 mL
Minimum Volume
0.3 mL
Container
Plastic vial
Collection Instructions
Centrifuge and aliquot serum into a plastic vial.
Causes for Rejection
Gross hemolysis: OK; Gross lipemia: OK
Stability Requirements
| Temperature | Period |
|---|---|
| Refrigerated | 14 days |
| Frozen | 90 days |