Allergen, Food, Catfish IgE
Also known as: CATFISH
Use
The Catfish IgE test is used for the quantitative measurement of allergen-specific IgE antibodies to catfish in human serum. This test helps in diagnosing allergic diseases and is useful in determining the presence of IgE antibodies specific to catfish, which are indicative of a potential allergic reaction upon exposure to this food allergen. While increasing ranges of allergen-specific IgE concentrations typically reflect higher allergen exposure, these levels may not directly correlate with the severity of clinical symptoms or predictive of clinical reactivity upon actual challenge, but must be correlated with patient's clinical history and other tests.
Special Instructions
The test results are essential for assessing potential allergic reactions to catfish, and the IgE levels should be correlated with clinical history and in vivo reactivity. Patients are advised to avoid multiple patient encounters before sample collection. Serum should be separated from cells as soon as possible and transferred to a standard transport tube.
Limitations
The clinical relevance of IgE concentrations within the 0.10-0.34 kU/L range remains undetermined, and results should be interpreted by specialists. A negative result does not rule out the possibility of clinical allergy or anaphylaxis. IgE levels may not correlate with immediate allergic response severity. The test is not FDA-approved and was developed and its performance characteristics determined by ARUP Laboratories, emphasizing the necessity for correlation with clinical history and in vivo testing for specific allergens.
New York Approved
Methodology
Immunoassay (Fluorescent Enzyme Immunoassay)
Biomarkers
LOINC Codes
- 7187-8
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 serum in a serum separator tube. Separate serum from cells ASAP or within 2 hours of collection and transfer to a transport tube.
Patient Preparation
Multiple patient encounters should be avoided before sample collection.
Causes for Rejection
Hemolyzed, icteric, or lipemic specimens.
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 48 hours |
| Refrigerated | 2 weeks |
| Frozen | 1 year |