Blomia tropicalis, IgE, Serum
Use
This test is useful for establishing a diagnosis of an allergy to Blomia tropicalis and defining the allergen responsible for eliciting signs and symptoms. It helps identify allergens responsible for allergic responses and anaphylactic episodes, confirming sensitization prior to starting immunotherapy, and investigating the specificity of allergic reactions to insect venom allergens, drugs, or chemical allergens. However, testing for IgE antibodies is not useful for patients previously treated with immunotherapy to determine if residual clinical sensitivity exists or if medical management does not depend on allergen specificity.
Special Instructions
If not ordering electronically, a completed Allergen Test Request form (T236) must accompany the specimen. For a listing of allergens available for testing, refer to the "Allergens - Immunoglobulin E (IgE) Antibodies" document.
Limitations
The test may show measurable levels of IgE antibodies in individuals with clinically insignificant sensitivity to allergens. False-positive results may occur in patients with significantly elevated serum IgE (>2500 kU/L) due to non-specific binding. IgE testing should be interpreted in clinical context.
New York Approved
Methodology
Immunoassay (Fluorescence Enzyme Immunoassay (FEIA))
Biomarkers
LOINC Codes
- 10921-5
- 10921-5
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 dead space
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 |