Swordfish
Use
The Swordfish test measures the levels of specific IgE antibodies to swordfish in the patient's serum. It is used primarily to confirm an IgE-mediated allergic response to swordfish consumption or exposure, which can cause various allergic symptoms ranging from mild urticaria to anaphylaxis. This information can aid clinicians in diagnosing food allergies and determining the appropriate allergen avoidance strategies for the patient.
Special Instructions
Testing schedules may vary; consult the laboratory for additional confirmatory or reflex test timings. Ensure proper patient preparation by avoiding consumption of swordfish prior to testing, if required. Results should be interpreted in conjunction with clinical assessment and other diagnostic tests.
Limitations
The Swordfish IgE test is limited in its ability to differentiate between sensitization and clinical allergy, as the presence of IgE antibodies alone does not confirm an active allergic disease. False positives can occur due to cross-reactivity with other fish allergens or environmental factors. The test should be part of a comprehensive allergy assessment including patient history and symptoms. Analytical precision may vary, and additional tests may be necessary for comprehensive allergy profiling, especially in complex cases with multiple allergens.
Methodology
Immunoassay (Thermo Fisher ImmunoCAP®)
Biomarkers
LOINC Codes
- 7728-9
- 7728-9
Result Turnaround Time
3-5 days
Related Documents
For more information, please review the documents below
Specimen
Serum
Volume
0.2 mL
Minimum Volume
Not provided
Container
Red-top tube or gel-barrier tube
Storage Instructions
Room temperature
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 14 days |
| Refrigerated | 14 days |
| Frozen | 3 months |
Other tests from different labs that may be relevant