Allergen Profile, Cashew Nut, IgE With Component Reflex
Use
The measurement of specific immunoglobulin E (IgE) to components of an allergen, either purified native or recombinant, is referred to as component resolved diagnosis (CRD).1-5 This approach represents an improvement over traditional measurement of IgE to allergen extracts that contain a mixture of proteins. The pattern of specific IgE reactivity to component allergens can predict which patients are at higher risk for systemic allergic reactions versus those who are sensitized but clinically tolerant. CRD can also be used to predict which patients are at risk for more severe reactions and which patients are likely to have milder symptoms.
Special Instructions
Not provided.
Limitations
While component IgE testing can enhance allergy evaluation, it cannot replace clinical history or oral food challenges. Detectable IgE does not necessarily confer allergy, especially if the patient tolerates the food regularly. Sensitization to Ana o 3 suggests primary allergy and risk for systemic reactions. Clinical correlation is required, and patients with suspected allergy should avoid all forms of cashew nuts.
Methodology
Immunoassay (Other)
Biomarkers
Ana o 3
AnalyteIgE Cashew Nut
Analyte
LOINC Codes
- 6718-1 - Cashew nut IgE Qn
- 8251-1 - Service Cmnt-Imp
- 6718-1 - Cashew nut IgE Qn
- 82539-8 - Cashew nut (rAna o) 3 IgE Qn
Result Turnaround Time
3-5 days
Related Documents
For more information, please review the documents below
Specimen
Serum
Volume
1 mL
Minimum Volume
0.5 mL
Container
Red-top tube or gel-barrier tube
Storage Instructions
Room temperature
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