Rhizopus nigricans, IgE, Serum
Use
This test is useful for establishing a diagnosis of an allergy to Rhizopus nigricans. It helps define the specific allergen responsible for eliciting signs and symptoms, indicating allergens responsible for allergic responses or anaphylactic episodes. This test is also used to confirm sensitization prior to immunotherapy and to investigate allergic reactions to insect venom, drugs, or chemical allergens. It is not useful for determining residual clinical sensitivity in patients previously treated with immunotherapy or in cases where medical management does not depend on allergen specificity identification.
Special Instructions
For detailed test ordering information, refer to the 'Allergens - Immunoglobulin E (IgE) Antibodies' PDF available on the test catalog page. Complete and send an 'Allergen Test Request' form (T236) with the specimen if not ordered electronically.
Limitations
IgE antibody testing is not helpful for diagnosing residual clinical sensitivity post-immunotherapy. False-positive results may occur due to nonspecific binding in patients with elevated serum IgE levels (>2500 kU/L). Results should be clinically correlated as some patients with insignificant sensitivity may have measurable IgE levels.
FDA ApprovedNew York Approved
Methodology
Immunoassay (FEIA)
Biomarkers
LOINC Codes
- 6229-9
- 6229-9
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
0.3 mL for 1 allergen
Container
Plastic vial
Collection Instructions
Centrifuge and aliquot serum into a plastic vial.
Causes for Rejection
Gross hemolysis and gross lipemia are acceptable.
Stability Requirements
| Temperature | Period |
|---|---|
| Refrigerated | 14 days |
| Frozen | 90 days |