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Allergen, Food, Wheat and nGliadin With Reflex to Components, IgE
Ordering Recommendation
New York DOH Approval Status
Specimen Required
Multiple patient encounters should be avoided.
Serum separator tube.
Separate serum from cells ASAP or within 2 hours of collection. Transfer 0.5 mL serum to an ARUP standard transport tube. (Min: 0.35 mL). For multiple allergen orders refer to "Allergen Specimen Collection Instructions" at www.aruplab.com/testing/resources/specimen.
Refrigerated.
Hemolyzed, icteric, or lipemic specimens.
After separation from cells: Ambient: 48 hours; Refrigerated: 2 weeks; Frozen: 1 month
Methodology
Quantitative ImmunoCAP Fluorescent Enzyme Immunoassay
Performed
Sun-Sat
Reported
1-3 days
Reference Interval
| Test Number |
Components |
Reference Interval |
|---|---|---|
| Allergen, Food, Wheat IgE | Less than or equal to 0.34 kU/L | |
| Allergen, Food, Wheat nGliadin IgE | Less than or equal to 0.09 kU/L |
Interpretive Data
Allergen results of 0.10-0.34 kU/L are intended for specialist use as the clinical relevance is undetermined. Even though increasing ranges are reflective of increasing concentrations of allergen-specific IgE, these concentrations may not correlate with the degree of clinical response or skin testing results when challenged with a specific allergen. The correlation of allergy laboratory results with clinical history and in vivo reactivity to specific allergens is essential. A negative test may not rule out clinical allergy or even anaphylaxis.
| Reporting Range (reported in kU/L) |
Probability of IgE Mediated Clinical Reaction |
Class Scoring |
|---|---|---|
| Less than 0.10 | No significant level detected | 0 |
| 0.10-0.34 | Clinical relevance undetermined | 0/1 |
| 0.35-0.70 | Low | 1 |
| 0.71-3.50 | Moderate | 2 |
| 3.51-17.50 | High | 3 |
| 17.51-50.00 | Very high | 4 |
| 50.01-100.00 | Very high | 5 |
| Greater than 100.00 | Very high | 6 |
Laboratory Developed Test (LDT)
Note
This assay will initially test wheat whole allergen and purified gliadin. If the wheat whole allergen result is greater than or equal to 0.1 kU/L, wheat component Tri a 14 will be ordered. If the purified gliadin is greater than or equal to 0.1 kU/L, wheat component Tri a 19 will be ordered. Additional charges apply.
Hotline History
Hotline History
CPT Codes
86003; 86008 if reflexed add 86008 x2
Components
| Component Test Code* | Component Chart Name | LOINC |
|---|---|---|
| 0055034 | Allergen, Food, Wheat IgE | 6276-0 |
| 3017570 | Allergen, Food, Wheat nGliadin IgE | 82583-6 |
