Timothy Grass, IgE, Serum
Use
This test is useful for establishing a diagnosis of an allergy to timothy grass by identifying specific IgE antibodies. It helps define the allergen responsible for eliciting clinical allergy symptoms and confirms sensitization prior to immunotherapy. Testing for IgE antibodies is not useful for patients who have undergone immunotherapy to determine residual clinical sensitivity.
Special Instructions
An Allergen Test Request form must be completed and sent if not ordering electronically.
Limitations
Testing for IgE antibodies is not recommended in patients who have undergone immunotherapy to determine residual clinical sensitivity or in cases where medical management does not rely on allergen specificity. False positive results may occur in patients with very high serum IgE due to nonspecific binding.
FDA ApprovedNew York Approved
Methodology
Immunoassay (FEIA)
Biomarkers
LOINC Codes
- 6265-3
- 6265-3
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
(0.05 mL x number of allergens) + 0.25 mL deadspace
Container
Plastic vial
Collection Instructions
Centrifuge and aliquot serum into a plastic vial.
Storage Instructions
Refrigerate preferred or freeze for longer storage.
Causes for Rejection
Gross hemolysis OK, Gross lipemia OK
Stability Requirements
| Temperature | Period |
|---|---|
| Refrigerated | 14 days |
| Frozen | 90 days |