Food-Grain Panel, Serum
Use
This test is useful for establishing a diagnosis of an allergy to barley, rice, rye, and wheat. It helps in defining the allergen responsible for eliciting signs and symptoms and identifying allergens responsible for allergic responses or anaphylactic episodes. It is also used to confirm sensitization prior to beginning immunotherapy and investigate the specificity of allergic reactions. It is not useful for patients previously treated with immunotherapy to determine if residual clinical sensitivity exists.
Special Instructions
The test uses a pooled allergen reagent and reports with a single qualitative class result and concentration. In cases of a positive test, follow-up testing must be performed to differentiate between individual allergens in the panel. Only one result is generated for each panel.
Limitations
Testing for IgE antibodies is not useful in patients whose medical management does not depend upon identification of allergen specificity. Some individuals with clinically insignificant sensitivity may have measurable levels of IgE antibodies in the serum. False-positive results may occur in patients with markedly elevated serum IgE due to nonspecific binding.
FDA ApprovedNew York Approved
Methodology
Immunoassay (FEIA)
Biomarkers
LOINC Codes
- 46713-4
- 46713-4
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
0.3 mL
Container
Preferred: Serum gel; Acceptable: Red top; Submission: Plastic vial
Collection Instructions
Centrifuge and aliquot serum into a plastic vial.
Causes for Rejection
Gross hemolysis is acceptable; Gross lipemia is acceptable
Stability Requirements
| Temperature | Period |
|---|---|
| Refrigerated | 14 days |
| Frozen | 90 days |