Ulocladium chartarum, IgE, Serum
Use
This test is useful for establishing the diagnosis of an allergy to Ulocladium chartarum, defining the allergen responsible for eliciting signs and symptoms, and identifying allergens responsible for allergic response and/or anaphylactic episodes. It can help confirm sensitization prior to beginning immunotherapy and investigate the specificity of allergic reactions to insect venom allergens, drugs, or chemical allergens. However, testing for IgE antibodies is not useful in patients previously treated with immunotherapy to determine if residual clinical sensitivity exists, or in patients whose medical management does not depend upon identification of allergen specificity.
Special Instructions
For a listing of allergens available for testing, refer to the Allergens - Immunoglobulin E (IgE) Antibodies document provided by Mayo Clinic Laboratories. If not ordering electronically, complete and send an Allergen Test Request form (T236) with the specimen. Ensure correct specimen collection and handling to avoid diagnostic confusion.
Limitations
Some individuals with clinically insignificant sensitivity to allergens may have measurable levels of IgE antibodies in serum. False-positive results for IgE antibodies may occur in patients with markedly elevated serum IgE (>2500 kU/L) due to nonspecific binding to allergen solid phases. The presence of serum IgE antibodies should be interpreted in the clinical context, considering medical history and other diagnostic tests.
New York Approved
Methodology
Immunoassay (FEIA)
Biomarkers
LOINC Codes
- 11204-5
- 11204-5
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; For 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 |