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HelpTest Code GLSF Glucose, Spinal Fluid
Specimen Required
Container/Tube: Plastic vial
Specimen Volume: 1 mL
Collection Instructions: Centrifuge to remove any cellular material.
Useful For
Investigating possible central nervous system infection
Method Name
Photometric, Glucose Oxidase/Peroxidase
Reporting Name
Glucose, CSFSpecimen Type
CSFSpecimen Minimum Volume
0.25 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| CSF | Frozen (preferred) | 30 days | |
| Refrigerated | 7 days |
Reject Due To
All specimens will be evaluated at Mayo Clinic Laboratories for test suitability.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 https://www.mayocliniclabs.com/order-tests/si-unit-conversion.html
Day(s) Performed
Monday through Sunday
Report Available
Same day/1 dayPerforming 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
82945
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 |