Allergen, Weed, Nettle
Also known as: NETTLE
Use
The Allergen, Weed, Nettle test measures the presence of allergen-specific IgE antibodies to stinging nettle (Urtica dioica), which can help diagnose allergies related to nettle exposure. Determining serum IgE levels helps in assessing the likelihood of an IgE-mediated clinical reaction, although these levels may not always correlate with the severity of an allergic reaction. This test is particularly relevant for patients who exhibit allergy symptoms following exposure to stinging nettle.
Special Instructions
Multiple patient encounters should be avoided when preparing for this test. Serum should be separated from cells within 2 hours of collection and transferred to an ARUP Standard Transport Tube. For multiple allergen orders, refer to 'Allergen Specimen Collection Instructions' available online.
Limitations
While increasing levels of allergen-specific IgE concentration can indicate increased sensitivity to the allergen, they do not necessarily correlate with the clinical severity of symptoms experienced during exposure. It is crucial to correlate laboratory results with the patient's clinical history and any in vivo reactivity to the specific allergen. A negative test result does not rule out the possibility of clinical allergy or anaphylactic reactions.
FDA ApprovedNew York Approved
Methodology
Immunoassay (Fluorescent Enzyme Immunoassay)
Biomarkers
LOINC Codes
- 6186-1
- 6186-1
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 the specimen using a serum separator tube. Separate serum from cells as soon as possible or within 2 hours of collection.
Patient Preparation
Multiple patient encounters should be avoided.
Storage Instructions
Refrigerated storage is advised.
Causes for Rejection
Hemolyzed, icteric, or lipemic specimens are unacceptable.
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 48 hours |
| Refrigerated | 2 weeks |
| Frozen | 1 year |