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Test Code Billings Clinic: 4075 Glucose, Spinal Fluid

Performing Laboratory

Billings Clinic Laboratory: Chemistry

Useful For

Investigating possible central nervous system infection

Methodology

Hexokinase

Specimen Requirements

  • 1 mL of spinal fluid in a screw-capped, sterile vial or other suitable fluid container.
  • Send specimen refrigerated.

Storage/Stability

Specimen Type Temperature Time
CSF Refrigerated (preferred) 3 days
  Frozen 1 month

 

Reference Values

0 - 24 hours               34 - 119 mg/dL

24 hours - 12 years   40 - 80   mg/dL

> 12 years                 40 - 70   mg/dL
 

Spinal fluid glucose values are approximately 60% of concurrently drawn blood glucose values.

Day(s) Test Set Up

Daily

Test Classification and CPT Coding

82945 - Glucose; body fluid, other than blood

LOINC Code Information

Reporting Name LOINC Code
Glucose, CSF 2342-4