Test Details
Methodology
Immunologic
Result Turnaround Time
3 - 6 days
Turnaround time is defined as the usual number of days from the date of pickup of a specimen for testing to when the result is released to the ordering provider. In some cases, additional time should be allowed for additional confirmatory or additional reflex tests. Testing schedules may vary.
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.
Specimen Requirements
Specimen
Cerebrospinal fluid (CSF)
Volume
1 mL
Minimum Volume
0.25 mL
Container
Sterile container
Stability Requirements
Temperature | Period |
|---|---|
Room temperature | 14 days |
Refrigerated | 14 days |
Frozen | 14 days |
Freeze/thaw cycles | Stable x3 |
Reference Range
See table.
Age | Male (mg/dL) | Female (mg/dL) |
|---|---|---|
0 to 1 y | Not established | Not established |
2 to 17 y | 0.00−0.26 | 0.00−0.26 |
18 to 50 y | 0.00−0.71 | 0.00−0.52 |
>50 y | 0.00−1.04 | 0.00−0.78 |
Storage Instructions
Room temperature
LOINC® Map
| Order Code | Order Code Name | Order Loinc | Result Code | Result Code Name | UofM | Result LOINC |
|---|---|---|---|---|---|---|
| 100115 | Immunoglobulin A, Quant, CSF | 2457-0 | 100115 | Immunoglobulin A, Quant, CSF | mg/dL | 2457-0 |
| Order Code | 100115 | |||||
| Order Code Name | Immunoglobulin A, Quant, CSF | |||||
| Order Loinc | 2457-0 | |||||
| Result Code | 100115 | |||||
| Result Code Name | Immunoglobulin A, Quant, CSF | |||||
| UofM | mg/dL | |||||
| Result LOINC | 2457-0 |