Allergen, Food, Onion
Also known as: ONION
Use
This test measures the level of allergen-specific IgE to onion. Allergen-specific IgE tests, including the ImmunoCAP® system, are used to aid in the clinical diagnosis of IgE mediated allergic disorders. These tests should be interpreted in conjunction with the patient's clinical history and other laboratory findings. The level of specific IgE in the blood has been shown to correlate with the probability of allergic disease.
Special Instructions
Separate serum from cells as soon as possible or within 2 hours of collection. Transfer to an ARUP Standard Transport Tube with the appropriate minimum volume. Refrigerated storage is required for transport.
Limitations
The correlation between in vitro allergen-specific IgE levels and clinical symptoms is variable. Low levels of IgE can be associated with significant allergic reactions, and high levels may not necessarily correlate with severity of symptoms. The test may not detect all individuals with clinical allergies or predict the occurrence and severity of reactions. A negative test does not rule out the potential for future allergic reactions or anaphylaxis.
New York Approved
Methodology
Immunoassay (Fluorescent Enzyme Immunoassay)
Biomarkers
LOINC Codes
- 6193-7
Result Turnaround Time
1-3 days
Related Documents
For more information, please review the documents below
Specimen
Serum
Volume
0.5 mL
Minimum Volume
0.25 mL
Container
ARUP Standard Transport Tube
Patient Preparation
Multiple patient encounters should be avoided.
Storage Instructions
Refrigerated storage is required for transport.
Causes for Rejection
Hemolyzed, icteric, or lipemic specimens.
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 48 hours |
| Refrigerated | 2 weeks |
| Frozen | 1 year |