Allergen, Grass, Orchard Grass/Cocksfoot
Also known as: ORCHARD
Use
This test measures allergen-specific IgE concentrations, which may help assess a patient's risk of an IgE-mediated allergic reaction to Orchard Grass/Cocksfoot. While increasing concentrations of allergen-specific IgE indicate higher sensitization levels, they do not necessarily correlate with clinical symptoms or anaphylaxis when a patient is challenged with a specific allergen. Interpretation should be integrated with the patient's clinical history and in-vivo reactivity.
Special Instructions
Avoid multiple patient encounters for specimen collection. Serum should be separated from cells as soon as possible, preferably within 2 hours of collection. Ensure adequate volume for allergen testing; refer to ARUP's allergen specimen collection instructions for multi-allergen orders. Refrigeration is the preferred transport condition.
Limitations
Allergen results between 0.10 kU/L and 0.34 kU/L are of undetermined clinical relevance and require specialist interpretation. Allergen-specific IgE concentrations might not reflect the severity of an allergic reaction or correlate with skin test results. A negative IgE test does not entirely rule out clinical allergies or the possibility of anaphylaxis.
FDA ApprovedNew York Approved
Methodology
Immunoassay (Fluorescent Enzyme Immunoassay)
Biomarkers
LOINC Codes
- 6195-2
Result Turnaround Time
1-3 days
Related Documents
For more information, please review the documents below
Specimen
Serum
Volume
0.5 mL
Minimum Volume
0.25 mL
Container
ARUP Standard Transport Tube
Collection Instructions
Separate serum from cells ASAP or within 2 hours of collection. Transfer to transport tube.
Patient Preparation
Multiple patient encounters should be avoided.
Storage Instructions
Refrigerated transport is preferred.
Causes for Rejection
Hemolyzed, icteric, or lipemic specimens.
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 48 hours |
| Refrigerated | 2 weeks |
| Frozen | 1 year |