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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) and Time(s) Performed

Monday through Sunday; Continuously


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 or approved by the U.S. 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.

NY State Approved