Allergen, Fungi and Molds, Alternaria alternata (tenuis)
Also known as: ALTER
Use
This test is used to determine the presence of allergen-specific IgE antibodies to Alternaria alternata (tenuis), a common fungal allergen. It helps diagnose allergic diseases such as allergic rhinitis, asthma, and other hypersensitivity reactions caused by exposure to this allergen. The test measures IgE levels to assess the likelihood of an IgE-mediated allergic reaction, although it does not predict the severity of a clinical response. Results should be interpreted in conjunction with clinical history and other allergy diagnostic tools.
Special Instructions
Serum should be separated from cells as soon as possible or within two hours of collection to ensure specimen integrity. Use an ARUP Standard Transport Tube for transport. For multiple allergen orders, refer to the 'Allergen Specimen Collection Instructions' at www.aruplab.com/testing/resources/specimen.
Limitations
Concentrations of allergen-specific IgE determined by this test may not correlate with the degree of clinical response or skin testing results. Allergen results of 0.10-0.34 kU/L are of undetermined clinical relevance and intended for specialist use. A negative test result does not rule out the possibility of a clinical allergy or anaphylaxis. Correlation with clinical history and in vivo reactivity is necessary for a comprehensive allergy assessment.
FDA ApprovedNew York Approved
Methodology
Immunoassay (Fluorescent Enzyme Immunoassay)
Biomarkers
LOINC Codes
- 6020-2
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.
Patient Preparation
Multiple patient encounters should be avoided.
Storage Instructions
Refrigerated transport.
Causes for Rejection
Hemolyzed, icteric, or lipemic specimens.
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 48 hours |
| Refrigerated | 2 weeks |
| Frozen | 1 year |