Immunoglobulin A, Quantitative, Cerebrospinal Fluid
Also known as: IgA, CSF
Use
This test may be used to evaluate the central nervous system involvement by infection, neoplasm, or primary neurological disease (ie, multiple sclerosis). A local synthesis of IgA within the CNS is most prominent in patients with bacterial infections and has special relevance in the diagnosis of tuberculous meningitis.
Special Instructions
The third tube of a routinely obtained three-tube set of CSF should be used for CSF IgA study.
Limitations
The test results should be integrated with the clinical presentation and findings from other diagnostic tests. This test's ability to differentiate types of neurological conditions or infections may be limited by the overlap of IgA synthesis in various disorders, and it should not be used as the sole diagnostic criterion.
Methodology
Immunoassay
Biomarkers
LOINC Codes
- 2457-0
- 2457-0
Result Turnaround Time
3-6 days
Related Documents
For more information, please review the documents below
Specimen
Cerebrospinal Fluid
Volume
1 mL
Minimum Volume
0.25 mL
Container
Sterile container
Storage Instructions
Room temperature
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 14 days |
| Refrigerated | 14 days |
| Frozen | 14 days |