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HelpTest Code GLU CSF Glucose, CSF
Additional Codes
LAB185
Collection Method
Lumbar puncture or CSF shunt
Container
Sterile CSF Tube
Specimen Type
Sterile CSF Tube
Minimum Volume
0.5ml
Specimen Stability
| Ambient | 2 hours |
| Refrigerated (4°C to 8°C) | 3 days |
| Frozen(-40°C to 0°C) | 3 days |
Reference or Target Ranges
| Age | Male | Female |
| < 12 years |
50-80 comment |
50-80 comment |
| > 12 years |
40-70 comment |
40-70 comment |
Report comment:
CSF glucose should be about 60% of the plasma values and must be compared with plasma measured at the same time for adequate clinical interpretation.
Reportable Units
mg/dL
Critical Value
Not defined for this assay
Reasons for Rejection
| Hemolysis Threshold | n/a |
| Icterus Threshold | n/a |
| Lipemia Threshold | n/a |
| Other | QNS, contaminated, improperly Labeled, improper specimen type |
Performance Information
| Days and Time Performed | 24/7 |
| Expected Turn Around Time |
Stat: 1 hour Routine: 4 hours |
| Stat Availability | Yes |
| Performing Bench | CPH Chemistry |
| Methodology/Method Description | Roche Cobas |
CPT Codes
82945
Last review/edit date
2025