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Test Code LAB185 Glucose, Cerebrospinal Fluid (CSF)

Performing Laboratory

Barnes-Jewish Hospital Laboratory

Methodology

Enzymatic (Hexokinase)

Literature Reference:

Package insert: Glucose/HK GLUC3. Roche Corporation, 06/2018.

Specimen Requirements

Specimen Type: CSF

Container/Tube: Screw-capped, plastic vial; See Body Fluid Collection Guidelines under Special Instructions

Specimen Volume: 1 mL

 

Additional Information: Indicate CSF.

Day(s) Test Set Up

Monday through Sunday
Turnaround Time:
STAT: 1 hour after receipt in laboratory
Routine: not applicable

Test Classification and CPT Coding

82945

Reference Values

CSF glucose should be 60% to 66% of the plasma glucose concentration (mg/dL)

Physician alert value (automatic call-back): ≤40 mg/dL

Literature References:

1. Rifai N, Horvath AR, Wittwer AT eds: Textbook of Clinical Chemistry and Molecular Diagnostics 6th ed: Chapter 33, p. 518, Elsevier, St. Louis, MO 2018.

2. Watson MA, Scott MG; Clinical Utility of Biochemical Analysis of Cerebrospinal Fluid. ClinChem 1995; 41:343.

Specimen Transport Temperature

Ambient

Additional Information

For BJH Laboratory Use Only

Laboratory Processing Instructions:

Test performed in BJH Core lab. If specimen is received in a VACUTAINER, check procedure to confirm suitability. Centrifuge upon receipt. Apply blue tape to the specimen aliquot tube. Deliver to Cobas 8000. Completed specimen is stored frozen for 30 days. 

Special Instructions

See CSF Collection Guidelines under General Information.

See Analyte Stability Chart under General Information for a complete list.
 

LOINC Code

 

Name

LOINC Code

Glucose, CSF

2342-4