Immunofixation (IFE), Urine
Also known as: Electrophoresis, Urine, IFE, IEP, Urine, IFE, Urine, Immunoelectrophoresis, Urine, Urine Immunoelectrophoresis
Use
Detect and identify monoclonal immunoglobulin gammopathies
Special Instructions
Ensure to state the patient's age and clinical diagnosis on the test request form. This information assists in the accurate interpretation of results and in the context of the patient's clinical picture.
Limitations
The reliability of immunofixation testing can be affected by the presence of high concentrations of polyclonal immunoglobulins or interfering substances in urine, which might obscure the detection of monoclonal bands. Additionally, trace levels of monoclonal proteins might not be detected due to sample concentration limits or inherent assay sensitivity constraints. Proper specimen handling and adherence to volume requirements are crucial to ensure the test's accuracy.
Methodology
Immunoassay (None)
Biomarkers
LOINC Codes
- 13440-3
- 13440-3
Result Turnaround Time
3-5 days
Related Documents
For more information, please review the documents below
Specimen
Urine
Volume
10 mL aliquot
Minimum Volume
5 mL aliquot
Container
Plastic urine container, no preservative
Collection Instructions
Random or 24-hour urine collection; mix well.
Storage Instructions
Room temperature
Causes for Rejection
Improper volume, incorrect container, or mislabeled specimens.
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 14 days |
| Refrigerated | 14 days |
| Frozen | 14 days |