Parietaria officinalis, IgE, Serum
Use
The test is useful for establishing a diagnosis of an allergy to Parietaria officinalis. It also aids in defining the allergen responsible for eliciting signs and symptoms, identifying specific allergens causing allergic responses or anaphylactic episodes, confirming sensitization prior to immunotherapy, and investigating specific allergic reactions to insect venom allergens, drugs, or chemical allergens. IgE antibody testing is not useful in patients previously treated with immunotherapy or when medical management does not depend on allergen specificity.
Special Instructions
Ensure that electronic orders or complete forms (Allergen Test Request T236) are submitted with the specimen if not ordering electronically.
Limitations
Testing for IgE antibodies is not recommended for patients already treated with immunotherapy for specific allergens since it may not accurately reflect residual sensitivity. False-positive results may occur in patients with significantly elevated serum IgE levels (>2500 kU/L) due to nonspecific binding. Results should be interpreted in conjunction with clinical symptoms, as measurable IgE does not always correlate with clinical allergy symptoms.
FDA ApprovedNew York Approved
Methodology
Immunoassay (Fluorescence Enzyme Immunoassay (FEIA))
Biomarkers
LOINC Codes
- 6200-0
- 6200-0
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
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 and lipemia are acceptable.
Stability Requirements
| Temperature | Period |
|---|---|
| Refrigerated | 14 days |
| Frozen | 90 days |