Cottonwood, IgE, Serum
Use
This test is useful for establishing a diagnosis of an allergy to cottonwood and defining the specific allergen responsible for allergic symptoms. It helps identify allergens responsible for allergic responses or anaphylactic episodes. The test confirms sensitization prior to starting immunotherapy and aids in investigating the specificity of allergic reactions to potential allergens.
Special Instructions
The test is not useful for determining residual clinical sensitivity in patients who have undergone immunotherapy or in cases where medical management doesn't rely on identifying allergen specificity.
Limitations
False-positive results for IgE antibodies might occur in patients with markedly elevated serum IgE due to nonspecific binding. The presence of clinically insignificant sensitivity could be associated with measurable levels of IgE. Test results must be interpreted in clinical context.
FDA ApprovedNew York Approved
Methodology
Immunoassay (Fluorescence Enzyme Immunoassay (FEIA))
Biomarkers
LOINC Codes
- 6090-5
- 6090-5
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
Container
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 |