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Test ID LASF1 Lactic Acid, Spinal Fluid

Specimen Required

Specimen Type: Spinal fluid

Container/Tube: Sterile container

Specimen Volume: 1 mL

Collection Instructions: Centrifuge to remove any cellular material.

Useful For

Aid in differentiating between bacterial and viral meningitis


Aid in identifying increased anaerobic glycolysis or hypoxia associated with bacterial meningitis, cerebral infarction, cerebral arteriosclerosis, intracranial hemorrhage, hydrocephalus, traumatic brain injury, cerebral edema, epilepsy, and inborn errors of metabolism

Method Name


Reporting Name

Lactic Acid, CSF

Specimen Type


Specimen Minimum Volume

0.5 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
CSF Frozen (preferred) 60 days
  Refrigerated  24 hours
  Ambient  3 hours

Reference Values

0-2 days: 1.1-6.7 mmol/L

3-10 days: 1.1-4.4 mmol/L

11 days-17 years: 1.1-2.8 mmol/L

>17 years: 1.1-2.4 mmol/L

Day(s) Performed

Monday through Sunday

Report Available

Same day/1 to 2 days

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Test Classification

This test has been cleared, approved, or is exempt by the US Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.

CPT Code Information


LOINC Code Information

Test ID Test Order Name Order LOINC Value
LASF1 Lactic Acid, CSF 2520-5


Result ID Test Result Name Result LOINC Value
LASF1 Lactic Acid, CSF 2520-5