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HelpTest Code Billings Clinic: 2265 Mayo: GERB Gerbil Epithelium, IgE, Serum
Reporting Name
Gerbil Epithelium, IgEPerforming Laboratory
Mayo Clinic Laboratories in Rochester
Useful For
Establishing the diagnosis of an allergy to gerbil epithelium
Defining the allergen responsible for eliciting signs and symptoms
Identifying allergens:
-Responsible for allergic response and/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
Method Name
Fluorescence Enzyme Immunoassay (FEIA)
Ordering Guidance
For a listing of allergens available for testing, see Allergens - Immunoglobulin E (IgE) Antibodies
Specimen Required
Collection Container/Tube:
Preferred: Serum gel
Acceptable: Red top
Submission Container/Tube: Plastic vial
Specimen Volume: 0.5 mL for every 5 allergens requested
Collection Instructions: Centrifuge and aliquot serum into a plastic vial.
Specimen Type
SerumSpecimen Minimum Volume
For 1 allergen: 0.3 mL
For more than 1 allergen: (0.05 mL x number of allergens) + 0.25 mL dead space
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| 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 |
Reference values apply to all ages.
Interpretation
Detection of IgE antibodies in serum (class 1 or greater) indicates an increased likelihood of allergic disease as opposed to other etiologies and defines the allergens that may be responsible for eliciting signs and symptoms.
The level of IgE antibodies in serum varies directly with the concentration of IgE antibodies expressed as a class score or kU/L.
Day(s) Performed
Monday through Friday
Report Available
Same day/1 to 3 daysTest Classification
This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. It has not been cleared or approved by the US Food and Drug Administration.CPT Code Information
86003
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| GERB | Gerbil Epithelium, IgE | 7334-6 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| GERB | Gerbil Epithelium, IgE | 7334-6 |
Forms
If not ordering electronically, complete, print, and send an Allergen Test Request (T236) with the specimen.