Caraway, IgE, Serum
Use
The Caraway, IgE test is utilized for establishing the diagnosis of an allergy to caraway by defining the allergen responsible for eliciting allergic responses and symptoms. It is particularly useful in identifying allergens responsible for allergic reactions and/or anaphylactic episodes, confirming sensitization before beginning immunotherapy, and investigating the specificity of allergic reactions to various allergens such as insect venom, drugs, or chemicals.
Special Instructions
If not ordering electronically, it is necessary to complete, print, and send an Allergen Test Request (T236) with the specimen. The test requires 0.5 mL of serum for every 5 allergens requested. The serum must be centrifuged and aliquoted into a plastic vial before submission.
Limitations
Testing for IgE antibodies is not useful for patients who have been previously treated with immunotherapy to determine residual clinical sensitivity. Also, it should not be used in cases where medical management does not hinge on the identification of specific allergens. False positives can occur in patients with very high IgE levels due to non-specific binding.
New York Approved
Methodology
Immunoassay (FEIA)
Biomarkers
LOINC Codes
- 7178-7
- 7178-7
Result Turnaround Time
1-3 days
Related Documents
For more information, please review the documents below
Specimen
Serum
Volume
0.5 mL for every 5 allergens requested
Minimum Volume
For 1 allergen: 0.3 mL
Container
Preferred: Serum gel; Acceptable: Red top; Submission: Plastic vial
Collection Instructions
Centrifuge and aliquot serum into a plastic vial.
Causes for Rejection
None specified other than need to follow submission requirements precisely.
Stability Requirements
| Temperature | Period |
|---|---|
| Refrigerated | 14 days |
| Frozen | 90 days |