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HelpTest Code LAB185 CSF Glucose
Clinical System Name
CSF Glucose
Description
CSF glucose may be done to diagnose tumors, infections, inflammation of the central nervous system, delirium, and other neurological and medical conditions.
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 |
Performing Laboratory
Seattle Children's Laboratory
Department
Department: Core Chemistry
Phone Number: 206-987-2617 (Client Services)
Synonyms
LAB185
GLU CSF
Sugar (Glucose) - CSF
Availability
| STAT | Performed | TAT |
|---|---|---|
| Y | 24/7 | 1 h |
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.
CPT Codes
82945