Allergen, Weed, Careless Weed IgE
Also known as: CARELESS
Use
This test is used to measure the level of IgE antibodies specific to the Careless Weed allergen (Amaranthus palmeri). It helps in the evaluation of allergic reactions and the probability of IgE mediated clinical reactions. The test is crucial for identifying allergens in patients with suspected allergic diseases. The results, presented in kU/L, need to be interpreted in the context of the patient's clinical history and other diagnostic findings.
Special Instructions
It is important to separate serum from cells as soon as possible or within 2 hours of collection. For multiple allergen orders, refer to specific collection instructions provided by ARUP Laboratories. Avoid multiple patient encounters if possible to ensure accurate results.
Limitations
This test has not been cleared or approved by the US Food and Drug Administration. It is intended for clinical purposes and is performed in a CLIA certified laboratory. Allergen results between 0.10-0.34 kU/L are intended for specialist use, and their clinical relevance is undetermined. Even though increasing IgE concentrations are reflective of increased allergen-specific IgE levels, they may not correlate with the severity of the clinical allergy symptoms or with skin testing results. A negative test does not rule out clinical allergy or anaphylaxis.
New York Approved
Methodology
Immunoassay (Fluorescent Enzyme Immunoassay)
Biomarkers
LOINC Codes
- 6060-8
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.
Patient Preparation
Multiple patient encounters should be avoided.
Storage Instructions
Refrigerated.
Causes for Rejection
Hemolyzed, icteric, or lipemic specimens.
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 48 hours |
| Refrigerated | 2 weeks |
| Frozen | 1 year |