Ovomucoid, IgE, Serum
Use
This test is useful for establishing a diagnosis of an allergy to ovomucoid, a major allergen found in egg whites. It helps in defining the allergen responsible for allergic reactions including those causing anaphylactic episodes. The test is particularly useful for identifying allergens prior to starting immunotherapy and can be used to investigate the specificity of allergic reactions to insect venom allergens, drugs, or chemical allergens. It measures IgE antibodies in serum, which are indicative of the immune response to allergens associated with allergic diseases.
Special Instructions
Not provided.
Limitations
Testing for IgE antibodies is not useful in patients who have previously been treated with immunotherapy to determine if residual clinical sensitivity exists. It is also less useful in patients where the medical management does not rely on identifying the specific allergen. False-positive results may occur in patients with markedly elevated serum IgE (>2500 kU/L) due to nonspecific binding to allergen solid phases. Some individuals with minor sensitivities may still have measurable IgE levels, thus results should be interpreted within the clinical context.
FDA ApprovedNew York Approved
Methodology
Immunoassay (FEIA)
Biomarkers
Ovomucoid
Protein
LOINC Codes
- 7557-2 - Ovomucoid IgE Qn
- 7557-2 - Ovomucoid IgE Qn
Result Turnaround Time
1-3 days
Related Documents
For more information, please review the documents below
Specimen
Serum
Volume
0.5 mL
Minimum Volume
0.3 mL
Container
Plastic vial
Collection Instructions
Centrifuge and aliquot serum into a plastic vial.
Causes for Rejection
None specified: Gross hemolysis and gross lipemia are acceptable.
Stability Requirements
| Temperature | Period |
|---|---|
| Refrigerated | 14 days |
| Frozen | 90 days |