Allergen, Food, Orange
Also known as: ORANGE
Use
This test measures allergen-specific IgE antibodies to orange, a common food allergen. The presence and level of these antibodies can aid in the diagnosis of IgE-mediated allergic reactions to orange, including urticaria, angioedema, and, in some cases, anaphylaxis. The test provides a quantitative measurement to assist in the clinical management of patients with suspected food allergies, guiding dietary recommendations and therapy options.
Special Instructions
Ensure proper specimen collection by using a serum separator tube, and separate the serum from cells as soon as possible, ideally within 2 hours of collection. Transport the serum in an ARUP Standard Transport Tube to avoid delays and preserve sample integrity. Unacceptable specimens include those that are hemolyzed, icteric, or lipemic. Please check and follow specific instructions for multiple allergen orders if applicable.
Limitations
Results of IgE levels between 0.10-0.34 kU/L have undetermined clinical relevance and should be interpreted in conjunction with clinical history and other diagnostic tests. Although increasing IgE levels indicate a greater likelihood of hypersensitivity reactions, there is not always a direct correlation with clinical symptoms. Allergen lab results should be considered with in vivo testing where appropriate. A negative test does not conclusively exclude allergies or possible anaphylaxis; consider further evaluations if clinical suspicion remains.
FDA ApprovedNew York Approved
Methodology
Immunoassay (Fluorescent Enzyme Immunoassay)
Biomarkers
LOINC Codes
- 6194-5
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
Collection Instructions
Use a serum separator tube and separate serum from cells as soon as possible, preferably within 2 hours of collection.
Patient Preparation
Avoid multiple patient encounters before collection.
Storage Instructions
Refrigerated
Causes for Rejection
Hemolyzed, icteric, or lipemic specimens.
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 48 hours |
| Refrigerated | 2 weeks |
| Frozen | 1 year |