Skip to Content
UW Health SMPH
American Family Children's Hospital

UW Hospital and Clinics Lab Test Directory

Test Name: Glucose, CSF

Test Code(s): CFGLUC / GM2740

CPT Code(s): 82945

Methodology: Hexokinase

Days Performed: Daily, 24 hours.

Turnaround Time: Stat: 1 hour. All requests processed stat.

Specimen Requirements

Specimen: Cerebrospinal fluid (CSF) or ventricular fluid

Collection Instructions: 0.2 mL of CSF or ventricular fluid is sufficient volume for glucose, protein, and chloride.

Collection Container: Preferred: Sterile screw cap container
Also Acceptable: Red top

Collection Volume: Preferred: 1 mL
Pediatrics: 0.3 mL

Sample Analyzed: Cerebrospinal fluid (CSF) or ventricular fluid aliquot

Volume Required: Preferred: 0.5 mL
Pediatrics: 0.1 mL

Specimen Processing: Centrifuge.  Transfer cell-free fluid to plastic vial.  Refrigerate.  

Specimen Transport: Transport specimen to UWHC Core Laboratory (B4/220) immediately.  Transport with coolant pack if coming from outreach location.

Unacceptable Criteria: Specimens greater than 2 hours old when received by the laboratory are not acceptable.

Stability: Ambient: 2 hours
Refrigerated: 2 hours
Frozen: okay if frozen within 2 hours


Expected Results:

40-80% of serum glucose

Critical Calls: View


Back to Lab Test Directory Index