Allergen, Weed, Russian Thistle
Also known as: RUSSIAN
Use
The Allergen, Weed, Russian Thistle test measures the level of allergen-specific IgE antibodies in serum specific to Russian Thistle (Salsola kali). The test aids in the diagnosis and management of allergic diseases by indicating IgE-mediated sensitivity to this specific weed allergen. The results, expressed in kilounits per liter (kU/L), help in evaluating the potential for allergic reactions but should be correlated with clinical history and other diagnostic tests to assess clinical significance.
Special Instructions
Multiple patient encounters should be avoided for sample collection. For handling multiple allergen orders, refer to "Allergen Specimen Collection Instructions" available on the ARUP website. Separate serum from cells as soon as possible or within 2 hours of collection to ensure sample integrity.
Limitations
While the test measures the concentration of IgE specific to Russian Thistle, these levels may not necessarily correspond to the severity of clinical symptoms or in vivo reactivity. A negative result does not rule out clinical allergy or anaphylaxis, and variability can occur based on individual sensitivity and other factors. The results must be integrated with patient clinical history and other diagnostic testing methods for a comprehensive assessment of allergy status.
FDA ApprovedNew York Approved
Methodology
Immunoassay (Fluorescent Enzyme Immunoassay)
Biomarkers
LOINC Codes
- 6234-9
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
Collect blood in a serum separator tube. Separate serum from cells ASAP or within 2 hours of collection. Transfer to an ARUP Standard Transport Tube.
Patient Preparation
Multiple patient encounters should be avoided.
Storage Instructions
Store and transport refrigerated. Stability after separation from cells: Ambient: 48 hours; Refrigerated: 2 weeks; Frozen: 1 year.
Causes for Rejection
Hemolyzed, icteric, or lipemic specimens.
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 48 hours |
| Refrigerated | 2 weeks |
| Frozen | 1 year |