Allergen, Food, Orange IgG
Also known as: ORANGE IGG
Use
This test measures allergen-specific IgG antibodies to orange, providing information on the patient's sensitization to this specific food allergen. IgG antibodies are different from IgE antibodies, and their presence indicates exposure rather than a true allergic reaction. This test is used to aid in the identification of foods that might contribute to non-IgE mediated hypersensitivity or delayed allergic reactions.
Special Instructions
Not provided.
Limitations
Values less than 2.00 mcg/mL are considered absent or undetectable for allergen-specific IgG antibodies. The test is developed as a Laboratory Developed Test (LDT) with performance characteristics determined exclusively by ARUP Laboratories. It's not FDA cleared or approved, which implies limitations in its application outside a CLIA-certified environment. Interpretation of results should consider the potential for cross-reactivity and the clinical context of the patient's symptoms and history.
Methodology
Immunoassay (Fluorescent Enzyme Immunoassay)
Biomarkers
IgG specific to Orange
Protein
LOINC Codes
- 51904-1 - Orange IgG-mCnc
Result Turnaround Time
1-8 days
Related Documents
For more information, please review the documents below
Specimen
Serum
Volume
0.5 mL
Minimum Volume
0.25 mL
Container
Serum separator tube (SST), transferred to ARUP standard transport tube
Collection Instructions
Separate serum from cells ASAP or within 2 hours of collection and transfer required volume.
Storage Instructions
Refrigerated transport.
Causes for Rejection
Hemolyzed, icteric, or lipemic specimens.
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 48 hours |
| Refrigerated | 2 weeks |
| Frozen | 1 year |
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