Weed Panel # 2, Serum
Use
This test is useful for establishing a diagnosis of allergy to specific allergens, including English plantain, lamb's quarters, mugwort, scale, and Western ragweed. It helps define the allergen responsible for eliciting signs and symptoms and identify allergens that might be responsible for allergic responses or anaphylactic episodes. It is also used to confirm sensitization before beginning immunotherapy.
Special Instructions
This panel uses a pooled allergen reagent and reports with a single qualitative class result and concentration. While it helps rule out allergic responses, individual allergen responses cannot be identified without further testing.
Limitations
IgE antibody testing is not useful for determining residual clinical sensitivity in patients previously treated with immunotherapy or when the medical management does not require identification of allergen specificity. False-positive results may occur in patients with significantly elevated serum IgE levels due to nonspecific binding.
FDA ApprovedNew York Approved
Methodology
Immunoassay (FEIA)
Biomarkers
LOINC Codes
- 24493-9
- 24493-9
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 deadspace
Container
Preferred: Serum gel; Acceptable: Red top; Submission: Plastic vial
Collection Instructions
Centrifuge and aliquot serum into a plastic vial.
Causes for Rejection
None listed
Stability Requirements
| Temperature | Period |
|---|---|
| Refrigerated | 14 days |
| Frozen | 90 days |