Lactic Acid, CSF
Order Code:
LACSF
Test Summary
Lactic Acid levels in CSF normally parallel blood levels. Increased CSF Lactic Acid levels occur in trauma, seizure, brain abscess, Multiple Sclerosis, and bacterial meningitis.
Aliases
- N/A
Specimen Collection
Special Instructions
N/A
Preferred Specimen
1 mL CSF collected in a sterile, plastic, screw-cap container
Minimum Volume
0.5 mL
Instructions
If specimen is not clear or contains blood, centrifuge and separate supernatant fluid before freezing.
Patient Preparation
N/A
Storage
N/A
Transport Temperature
Frozen
Specimen Stability
- Room temperature: 3 hours
- Refrigerated: 24 hours
- Frozen: 90 days
Limitations
Note: The assay manufacturer, Roche, notes that N-acetylcysteine, when administered in high concentrations (such as for treatment of acetaminophen overdose), can interfere with their assay for lactate (lactic acid), leading to falsely low results.
Other Acceptable Specimens
N/A
Unacceptable Specimens
N/A
Order Code
LACSF
EPIC (Premier) Code
LAB630
Includes
N/A
CPT Code
- 83605
Billing Code
- 671015
CPT Statement
Methodology
Spectrophotometry (SP)
FDA Status
FDA Approved
Physician Attestation of Informed Consent
N/A
Testing Laboratory
Quest Diagnostics Nichols Institute
14225 Newbrook Drive
Chantilly VA, 20153
14225 Newbrook Drive
Chantilly VA, 20153
Department
Reference Testing
Reference Range
See Laboratory Report
Setup Schedule / Expected Turnaround Time
Sunday-Friday; Report available: 1 - 2 days
Specimen Collection
Special Instructions
N/A
Preferred Specimen
1 mL CSF collected in a sterile, plastic, screw-cap container
Minimum Volume
0.5 mL
Instructions
If specimen is not clear or contains blood, centrifuge and separate supernatant fluid before freezing.
Patient Preparation
N/A
Storage
N/A
Transport Temperature
Frozen
Specimen Stability
- Room temperature: 3 hours
- Refrigerated: 24 hours
- Frozen: 90 days
Limitations
Note: The assay manufacturer, Roche, notes that N-acetylcysteine, when administered in high concentrations (such as for treatment of acetaminophen overdose), can interfere with their assay for lactate (lactic acid), leading to falsely low results.
Other Acceptable Specimens
N/A
Unacceptable Specimens
N/A
Result Information
Methodology
Spectrophotometry (SP)
Testing Laboratory
N/A
Reference Range
See Laboratory Report
Setup Schedule / Expected Turnaround Time
Sunday-Friday; Report available: 1 - 2 days