Chicken Droppings, IgE, Serum
Use
The test is used for establishing the diagnosis of an allergy to chicken droppings by identifying IgE antibodies specific to the allergen. This test helps define the allergen responsible for causing allergic reactions and symptoms. It is particularly useful in confirming sensitization before initiating immunotherapy and in investigating the allergic specificity to various allergens.
Special Instructions
If not ordering electronically, complete, print, and send an Allergen Test Request (T236) with the specimen. Ensure the collection of 0.5 mL of serum for every 5 allergens requested, and centrifuge the sample to aliquot serum into a plastic vial. Preferred container is a serum gel tube, while a red top tube is acceptable.
Limitations
Testing for IgE antibodies is not useful in patients previously treated with immunotherapy to determine if residual clinical sensitivity exists. Additionally, individuals with clinically insignificant sensitivity might still show measurable IgE levels, and high serum IgE concentrations can result in false positives due to nonspecific binding in patients with markedly elevated levels (>2500 kU/L).
New York Approved
Methodology
Immunoassay (FEIA)
Biomarkers
LOINC Codes
- 19734-3
- 19734-3
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; More than 1 allergen: (0.05 mL x number of allergens) + 0.25 mL dead space
Container
Preferred: Serum gel; Acceptable: Red top; Submission: Plastic vial
Collection Instructions
Centrifuge and aliquot serum into a plastic vial.
Causes for Rejection
Gross hemolysis: OK; Gross lipemia: OK
Stability Requirements
| Temperature | Period |
|---|---|
| Refrigerated | 14 days |
| Frozen | 90 days |