Allergen, Food, Peanut Components IgE
Also known as: PEANUT COM
Use
The test measures the concentration of IgE antibodies specific to peanut proteins in the patient's serum. It identifies potential allergens associated with systemic allergic reactions, like anaphylaxis, when exposed to peanuts. The presence of IgE antibodies indicates sensitization, which may correlate with allergic responses, although this does not always match the clinical outcome or skin test results. It is crucial for specialists to evaluate the results alongside clinical history and in vivo reactivity to specific allergens.
Special Instructions
Patient preparation involves avoiding multiple patient encounters. The collection involves using an SST tube, and specimens should be processed to separate serum within two hours of collection. Multiple specimen tubes should be avoided, and all available specimens must be included.
Limitations
The test results of 0.10-0.34 kU/L for whole peanut are intended for specialist interpretation as the clinical relevance is undetermined. There is variability in how increasing concentrations of allergen-specific IgE reflect allergic responses, and these concentrations may not correlate with skin testing results. A negative test does not rule out clinical allergy or anaphylaxis.
FDA ApprovedNew York Approved
Methodology
Immunoassay (Fluorescent Enzyme Immunoassay)
Biomarkers
LOINC Codes
- 6206-7
- 58779-0
- 58778-2
- 58777-4
- 64965-7
- 63477-4
- 11526-1
- 48767-8
- 90880-6
Result Turnaround Time
1-3 days
Related Documents
For more information, please review the documents below
Specimen
Serum
Volume
1.0 mL plus 0.1 mL for each additional allergen ordered
Minimum Volume
0.5 mL plus 0.04 mL for each additional allergen ordered
Container
ARUP standard transport tube
Collection Instructions
Collect using Serum separator tube (SST). Avoid multiple specimen tubes. Include all available specimen.
Patient Preparation
Avoid multiple patient encounters
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 |
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