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Test ID GLSF Glucose, Spinal Fluid

Useful For

Investigating possible central nervous system infection

Method Name

Photometric, Glucose Oxidase/Peroxidase

Reporting Name

Glucose, CSF

Specimen Type


Specimen Required

Container/Tube: Plastic vial

Specimen Volume: 1 mL

Collection Instructions: Centrifuge to remove any cellular material.

Specimen Minimum Volume

0.25 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
CSF Frozen (preferred) 30 days
  Refrigerated  7 days

Reference Values

Spinal fluid glucose concentration should be approximately 60% of the plasma/serum concentration and should be compared with concurrently measured plasma/serum glucose for adequate clinical interpretation.


For SI unit Reference Values, see

Day(s) Performed

Monday through Sunday

Performing Laboratory

Mayo Clinic Laboratories in Rochester

CPT Code Information


LOINC Code Information

Test ID Test Order Name Order LOINC Value
GLSF Glucose, CSF 2342-4


Result ID Test Result Name Result LOINC Value
GLSF Glucose, CSF 2342-4

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.

Report Available

Same day/1 day

NY State Approved