Allergen Grain Screen
Food, Grains (fx3)
Test Codes
EPIC: LAB1231167, SOFT: GRANE
Department
Special Testing Allergens
Instructions
This multi-allergen IgE antibody assay screens for the following allergens: Buckwheat, Corn/Maize, Oat, Sesame Seed, and Wheat.
Specimen Collection Criteria
Collect: One Gold-top SST tube.
Twenty individual allergen assays or allergen screens can be performed on one 5 mL Gold-top SST tube. Each allergen assay requires 100 mcL of serum.
Physician Office/Draw Specimen Preparation
Let specimen clot 30-60 minutes then immediately centrifuge to separate serum from cells. Refrigerate (2-8°C or 36-46°F) the centrifuged collection tube within two hours of collection.
Preparation for Courier Transport
Transport: Centrifuged collection tube refrigerated (2-8°C or 36-46°F).
Rejection Criteria
- Plasma specimens.
- Severely lipemic or hemolyzed specimens.
In-Lab Processing
Let specimen clot 30-60 minutes then immediately centrifuge to separate serum from cells. Room temperature is acceptable for a maximum of two hours.
Storage
Specimen Stability for Testing:
Centrifuged SST Tubes and Microtainers® with Separator Gel
Room Temperature (20-26°C or 68-78.8°F): 2 hours
Refrigerated (2-8°C or 36-46°F): 7 days
Frozen (-20°C/-4°F or below): Unacceptable
Red-top Tubes and Microtainers® without Separator Gel
Room Temperature (20-25°C or 68-77°F): 2 hours
Refrigerated (2-8°C or 36-46°F): Unacceptable
Frozen (-20°C/-4°F or below): Unacceptable
Serum Specimens (Pour-Overs)
Room Temperature (20-26°C or 68-78.8°F): 2 hours
Refrigerated (2-8°C or 36-46°F): 7 days
Frozen (-20°C/-4°F or below): 1 month
Specimen Storage in Department Prior to Disposal:
Refrigerated (2-8°C or 36-46°F): 7 days
Laboratory
Royal Oak Special Testing Laboratory
Performed
Monday – Friday.
Results available the next business day.
Reference Range
Allergy Reference Range: Less than 0.35 kU/L.
| Range (kU/L) |
Class |
Interpretation |
| Less than or equal to 0.34 |
0 |
Negative |
| 0.35-0.69 |
1 |
Low |
| 0.70-3.49 |
2 |
Medium |
| 3.50-17.49 |
3 |
High |
| 17.50-49.99 |
4 |
Very High |
| 50.0-100.0 |
5 |
Very High |
| Greater than 100 |
6 |
Very High |
Test Methodology
Fluorescence Enzyme Immunoassay (FEIA).
Interpretation
This multi-allergen IgE antibody assay screens for the following allergens: Buckwheat, Corn, Oat, Sesame Seed, and Wheat.
Clinical Utility
Positive assay results indicate a high probability of allergic disease induced by one or more of the allergens present in the multi-allergen panel. Negative assay results effectively rule out allergy induced by those allergens.
CPT Codes
86005
LOINC: 15219-9
Contacts
Special Chemistry Laboratory – RO
248-551-8044
Name: Special Chemistry Laboratory – RO
Location:
Phone: 248-551-8044
Last Updated
1/10/2025
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