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Glucose, CSF
Test Code468
CPT Codes
82945
Includes
Please note: For Glucose testing on fluids, the following tests are available:
Glucose, Amniotic Fluid; Glucose, Peritoneal Fluid; Glucose, Pleural Fluid; Glucose, Synovial Fluid.
For Glucose testing on synovial fluids, the following is available: Synovial Fluid Analysis
Glucose, Amniotic Fluid; Glucose, Peritoneal Fluid; Glucose, Pleural Fluid; Glucose, Synovial Fluid.
For Glucose testing on synovial fluids, the following is available: Synovial Fluid Analysis
Preferred Specimen
1 mL CSF submitted in a sterile, plastic, leak-proof container
Minimum Volume
0.5 mL
Instructions
Freeze immediately after collection.
Transport Temperature
Frozen
Specimen Stability
Room temperature: Unacceptable
Refrigerated: 14 days
Frozen: 28 days
Refrigerated: 14 days
Frozen: 28 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Hemolysis
Methodology
Spectrophotometry (SP)
Setup Schedule
Set up: Daily; Report available: Next day
Reference Range
40-80 mg/dL
Clinical Significance
Low CSF glucose concentrations suggest meningitis (especially if due to bacteria or tuberculosis), neoplastic involvement of the meninges, or other neurological disorder.
