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HelpOrder Code LABNUTSP Nuts Allergen Profile, Serum
Additional Codes
| Mayo Test ID |
|---|
| NUTSP |
Reporting Name
Nuts Allergen ProfileUseful For
Establishing a diagnosis of an allergy to nuts
Defining the allergen responsible for eliciting signs and symptoms
Identifying allergens:
-Responsible for allergic response or anaphylactic episode
-To confirm sensitization prior to beginning immunotherapy
-To investigate the specificity of allergic reactions to insect venom allergens, drugs, or chemical allergens
This test is not useful for patients previously treated with immunotherapy to determine if residual clinical sensitivity exists or in patients in whom the medical management does not depend upon identification of allergen specificity.
Specimen Type
SerumOrdering Guidance
For a listing of allergens available for testing, see Allergens - Immunoglobulin E (IgE) Antibodies.
Specimen Required
Supplies: Sarstedt Aliquot Tube, 5 mL (T914)
Collection Container/Tube:
Preferred: Serum gel
Acceptable: Red top
Submission Container/Tube: Plastic vial
Specimen Volume: 0.5 mL
Collection Instructions: Centrifuge and aliquot serum into a plastic vial.
Specimen Minimum Volume
See Specimen Required
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Serum | Refrigerated (preferred) | 14 days |
| Frozen | 90 days |
Reject Due To
| Gross hemolysis | OK |
| Gross lipemia | 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 of 0.70 kU/L or more (class 2 and above) will flag as abnormally high.
Reference values apply to all ages.
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Day(s) Performed
Monday through Friday
Method Name
Fluorescence Enzyme Immunoassay (FEIA)
CPT Code Information
86003 x 5
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| NUTSP | Nuts Allergen Profile | 63486-5 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| ALM | Almond, IgE | 6019-4 |
| CCNT | Coconut, IgE | 6081-4 |
| PEAN | Peanut, IgE | 6206-7 |
| PEC | Pecan-Food, IgE | 6208-3 |
| SESA | Sesame Seed, IgE | 6242-2 |
Profile Information
| Test ID | Reporting Name | Available Separately | Always Performed |
|---|---|---|---|
| ALM | Almond, IgE | Yes | Yes |
| SESA | Sesame Seed, IgE | Yes | Yes |
| PEAN | Peanut, IgE | Yes | Yes |
| PEC | Pecan-Food, IgE | Yes | Yes |
| CCNT | Coconut, IgE | Yes | Yes |
Special Instructions
Method Description
Specific IgE from the patient's serum reacts with the allergen of interest, which is covalently coupled to an ImmunoCAP. After washing away nonspecific IgE, enzyme-labeled anti-IgE antibody is added to form a complex. After incubation, unbound anti-IgE is washed away, and the bound complex incubated with a developing agent. After stopping the reaction, the fluorescence of the eluate is measured. Fluorescence is proportional to the amount of specific IgE present in the patient's sample (ie, the higher the fluorescence value, the more IgE antibody is present).(Package insert: ImmunoCAP System Specific IgE FEIA. Phadia; Rev 06/2020)
Forms
If not ordering electronically, complete, print, and send an Allergen Test Request (T236) with the specimen.