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HelpTest Code LAB185 CSF Glucose
Clinical System Name
CSF Glucose
Synonyms
LAB185
GLU CSF
Sugar (Glucose) - CSF
Sample Requirements
Specimen: CSF
Container(s): CSF Tube, Sterile Screw-Capped Container, Sterile Screw-Capped Tube, Syringe
Preferred Vol: 1.0 mL
Minimum Vol: 0.25 mL
Note: Note collection type on requisition and container (e.g. "LP" for CSF lumbar puncture.) Send to the lab immediately (within 1 hour) for accurate results.
Processing Instructions
Reject due to: Age of Specimen (give to Core Lab for determination)
Spin: Y
Aliquot: Y
Storage location: Core 5 Chemistry Refrigerator
Off-site collection: Simultaneous blood glucose levels are recommended. Specimen should be centrifuged within 1 hour of collection. Spin CSF and transfer supernatant to sterile plastic tube and refrigerate or freeze.
Stability
| Specimen Type | Temperature | Time |
|---|---|---|
| CSF | RT |
≤ 24 h |
| CSF | 2-8 C |
≤ 7 d |
| CSF | -20 C or -70 C |
≤ 365 d |
Availability
| STAT | Performed | TAT |
|---|---|---|
| Y | 24/7 | 1 h |
Performing Laboratory
Seattle Children's Laboratory
Department
Department: Core Chemistry
Phone Number: 206-987-2617 (Client Services)
CPT Codes
82945
Methodology
Method: Colorimetric method by Vitros 4600
Analytical Volume: 0.02 mL + 0.03 mL dead space
Reference Range
Normal CSF glucose is 45 - 60% of serum glucose measured at the
same time.
Description
CSF glucose may be done to diagnose tumors, infections, inflammation of the central nervous system, delirium, and other neurological and medical conditions.