Parietaria judaica, IgE, Serum
Use
Establishing a diagnosis of an allergy to Parietaria judaica by identifying the allergen responsible for eliciting signs and symptoms. The test is also useful for identifying allergens responsible for allergic responses and/or anaphylactic episodes, confirming sensitization prior to immunotherapy, and investigating the specificity of allergic reactions to insect venom allergens, drugs, or chemical allergens.
Special Instructions
Patients previously treated with immunotherapy should not use IgE antibodies testing to determine if residual clinical sensitivity exists, or if the medical management does not depend on identifying allergen specificity. For testing more than one allergen, ensure proper volume calculation: Specimen Volume - 0.5 mL for every 5 allergens. If not ordering electronically, complete, print, and send an Allergen Test Request form (T236) with the specimen.
Limitations
False-positive results may occur in patients with markedly elevated serum IgE (>2500 kU/L) due to nonspecific binding to allergen solid phases. Interpreting test results requires appropriate clinical context, as some individuals with clinically insignificant sensitivity to allergens may have measurable levels of IgE antibodies in serum.
FDA ApprovedNew York Approved
Methodology
Immunoassay (Fluorescence Enzyme Immunoassay (FEIA))
Biomarkers
LOINC Codes
- 6199-4
- 6199-4
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 for 1 allergen; (0.05 mL x number of allergens) + 0.25 mL deadspace for more than 1 allergen
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: OK; Gross lipemia: OK
Stability Requirements
| Temperature | Period |
|---|---|
| Refrigerated | 14 days |
| Frozen | 90 days |