Tyrophagus putrescentiae, IgE, Serum
Use
This test is useful for establishing a diagnosis of an allergy to Tyrophagus putrescentiae by defining the allergen responsible for eliciting signs and symptoms and identifying allergens responsible for allergic response or anaphylactic episode. It can confirm sensitization prior to beginning immunotherapy and investigate the specificity of allergic reactions to insect venom allergens, drugs, or chemical allergens.
Special Instructions
For a listing of allergens available for testing, see 'Allergens - Immunoglobulin E (IgE) Antibodies'. If not ordering electronically, complete, print, and send an Allergen Test Request (T236) with the specimen.
Limitations
IgE antibody testing is not useful in patients previously treated with immunotherapy to determine if residual clinical sensitivity exists or in patients where medical management does not depend on allergen identification. Some individuals with clinically insignificant sensitivity may have measurable IgE levels, leading to false positives. Elevated serum IgE (>2500 kU/L) can cause nonspecific binding, leading to false-positive results.
FDA ApprovedNew York Approved
Methodology
Immunoassay (FEIA)
Biomarkers
LOINC Codes
- 6256-2
- 6256-2
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
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 |