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Test Code PEANT Peanut, IgE with Reflex to Peanut Components, IgE, Serum

Secondary ID

64756

Useful For

Evaluation of patients with suspected peanut allergy

 

Evaluation of patients with possible peanut cross-reactivity

Reflex Tests

Test ID Reporting Name Available Separately Always Performed
PNTCP Peanut Components, IgE, S No No

Testing Algorithm

Testing begins with analysis of peanut IgE. If peanut IgE is negative (<0.10 kU/L), testing is complete.

 

If peanut IgE is ≥0.10 kU/L, then 7 peanut components (Ara h 2, Ara h 1, Ara h 3, Ara h 6, Ara h 8, Ara h 9, and profilin Bet v2) are performed at an additional charge.

Method Name

Fluorescent Enzyme Immunoassay (FEIA)

Reporting Name

Peanut Component Reflex, S

Specimen Type

Serum


Advisory Information


For a listing of allergens available for testing, see Allergens - Immunoglobulin E (IgE) Antibodies in Special Instructions



Specimen Required


Container/Tube:

Preferred: Red top

Acceptable: Serum gel

Specimen Volume: 2 mL


Specimen Minimum Volume

1.5 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
Serum Refrigerated (preferred) 14 days
  Frozen  90 days
  Ambient  7 days

Reject Due To

Gross hemolysis OK
Gross lipemia OK
Gross icterus OK

Reference Values

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 ≥0.70 kU/L (Class 2 and above) will flag as abnormally high.

Day(s) and Time(s) Performed

Monday through Friday; 9 a.m.-8 p.m.

Saturday; 8 a.m.-3 p.m.

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Test Classification

This test has been cleared, approved or is exempt by the U.S. 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

86003

LOINC Code Information

Test ID Test Order Name Order LOINC Value
PEANT Peanut Component Reflex, S 6206-7

 

Result ID Test Result Name Result LOINC Value
PNUT Peanut, IgE, S 6206-7