Brazil Nut Component, IgE, Serum
Use
Evaluation of patients with suspected Brazil nut allergy to component Ber e 1. Allergies to tree nuts, including Brazil nuts, are relatively prevalent and can result in severe reactions. The Brazil nut allergy occurs primarily through oral ingestion and may be associated with systemic reactions, including respiratory and urticaria, occasionally resulting in anaphylaxis. Ber e 1 is an abundant, heat and digestion resistant, storage protein component that is associated with systemic reactions to Brazil nuts.
Special Instructions
Not provided.
Limitations
Negative results for IgE antibodies against Brazil nut extract or allergenic components do not completely exclude the possibility of clinically relevant allergic responses upon exposure. Positive results are not diagnostic for allergy and only indicate possible sensitization to Brazil nuts or cross-reactive allergens. False-positive results may occur due to nonspecific binding in patients with elevated serum IgE (>2500 kU/L).
FDA ApprovedNew York Approved
Methodology
Immunoassay (FEIA)
Biomarkers
LOINC Codes
- 64963-2 - Brazil Nut (rBer e) 1 IgE Qn
- 64963-2 - Brazil Nut (rBer e) 1 IgE Qn
- 69048-7 - Immunologist review
Result Turnaround Time
1-3 days
Related Documents
For more information, please review the documents below
Specimen
Serum
Volume
0.6 mL
Minimum Volume
0.4 mL
Container
Plastic vial
Collection Instructions
Centrifuge and aliquot serum into a plastic vial.
Causes for Rejection
Gross hemolysis OK. Gross lipemia OK. Gross icterus OK.
Stability Requirements
| Temperature | Period |
|---|---|
| Refrigerated | 14 days |
| Frozen | 90 days |