Walnut
Use
The Walnut test measures specific IgE antibodies to walnut in serum, which assists in the diagnosis of allergic diseases. The presence of walnut-specific IgE may correlate with clinical symptoms of walnut allergy, such as respiratory, gastrointestinal, or skin reactions. It is utilized by clinicians to aid in the diagnosis and management of patients with suspected walnut allergy.
Special Instructions
The test requires the submission of a serum sample, preferably collected in a red-top tube or gel-barrier tube. Patients should consult with their healthcare provider for specific preparation requirements. This test is part of a broader allergy testing approach and can be ordered alongside other specific IgE tests for different allergens.
Limitations
This test should not be used as the sole basis for diagnosing walnut allergies. Clinical correlation is required since the presence of walnut-specific IgE is not synonymous with clinical reactivity. False positives and negatives can occur due to cross-reactivity with other allergens or technical issues. Interpretation should consider the patient’s history and other diagnostic tests.
Methodology
Immunoassay (Other)
Biomarkers
LOINC Codes
- 6273-7
- 6273-7
Result Turnaround Time
3-5 days
Related Documents
For more information, please review the documents below
Specimen
Serum
Volume
0.2 mL
Minimum Volume
Not provided
Container
Red-top tube or gel-barrier tube
Storage Instructions
Room temperature
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 14 days |
| Refrigerated | 14 days |
| Frozen | 3 months |