Lactic Acid, CSF (Change effective as of 07/21/25: Refer to 3019672 in the July Hotline)
Also known as: LA-CF
Use
This ARUP laboratory test entry indicates that as of July 21, 2025, the test code 0020516 for Lactic Acid in CSF has been replaced or referred to as ARUP test 3019672. The clinical significance is inherent in the analyte—lactic acid levels in cerebrospinal fluid may aid in differential diagnosis (e.g., distinguishing bacterial vs viral infection or metabolic disturbances), but the main purpose of this page is administrative: to redirect ordering to the updated test code.
Special Instructions
Change effective date provided: as of 07/21/25 refer to test 3019672. This is not an active test but a reference to the current ordering code.
Limitations
Not provided.
New York Approved
Methodology
Other
Biomarkers
Result Turnaround Time
7-11 days
Related Documents
For more information, please review the documents below
Specimen
Cerebrospinal Fluid
Volume
Not provided
Minimum Volume
Not provided
Storage Instructions
Critical – Frozen
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 3 hours |
| Refrigerated | 24 hours |
| Frozen | 2 months |