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Test ID BRAZX Brazil Nut Component, IgE, Serum


Specimen Required


Only orderable as a reflex. For more information see BRAZR / Brazil Nut, IgE, with Reflex to Brazil Nut Component, IgE, Serum

 

Collection Container/Tube:

Preferred: Serum gel

Acceptable: Red top

Submission Container/Tube: Plastic vial

Specimen Volume: 0.6 mL

Collection Instructions: Centrifuge and aliquot serum into a plastic vial.


Useful For

Evaluation of patients with suspected Brazil nut allergy to component Ber e 1

Testing Algorithm

If the Brazil nut specific total IgE result is 0.10 kU/L or more, then the Brazil nut component (Ber e 1) test is performed at an additional charge.

Method Name

Only orderable as a reflex. For more information see BRAZR / Brazil Nut, IgE, with Reflex to Brazil Nut Component, IgE, Serum.

 

Fluorescent Enzyme Immunoassay (FEIA)

Reporting Name

Brazil Nut Component, IgE, S

Specimen Type

Serum

Specimen Minimum Volume

0.4 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
Serum Refrigerated (preferred) 14 days
  Frozen  90 days

Reference Values

Only orderable as a reflex. For more information see BRAZR / Brazil Nut, IgE, with Reflex to Brazil Nut Component, IgE, Serum

 

Class

IgE kU/L

Interpretation

0

<0.10

Negative

0/1

0.10-0.34

Borderline/Equivocal

1

0.35-0.69

Equivocal

2

0.70-3.49

Positive

3

3.50-17.4

Positive

4

17.5-49.9

Strongly positive

5

50.0-99.9

Strongly positive

6

≥100

Strongly positive

 

Concentrations of 0.70 kU/L or more (class 2 and above) will flag as abnormally high.

Reference values apply to all ages.

Day(s) Performed

Monday through Friday

Report Available

Same day/1 to 3 days

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Test Classification

This test has been cleared, approved, or is exempt by the US Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.

CPT Code Information

86008

LOINC Code Information

Test ID Test Order Name Order LOINC Value
BRAZX Brazil Nut Component, IgE, S 64963-2

 

Result ID Test Result Name Result LOINC Value
IBRAZ Brazil Nut IgE Ab Interpretation 69048-7
E1BER Ber e 1 (Brazil Nut), IgE, S 64963-2

NY State Approved

Yes